Home / 260,778,528,006.40-391,167,792,009.60-208,535,751,942.40

Finding the Fourth Proportional to 260,778,528,006.40, 391,167,792,009.60 and 208,535,751,942.40

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Solution

The fourth proportional to 260,778,528,006.40, 391,167,792,009.60 and 208,535,751,942.40 is: 312,803,627,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,778,528,006.40 : 391,167,792,009.60 = 208,535,751,942.40 : x
  2. Step 2: Convert to fraction form
    260,778,528,006.40/391,167,792,009.60 = 208,535,751,942.40/x
  3. Step 3: Cross multiply
    260,778,528,006.40x = 391,167,792,009.60 × 208,535,751,942.40
  4. Step 4: Simplify right side
    260,778,528,006.40x = 81,572,469,642,370,261,975,040
  5. Step 5: Solve for x
    x = 81,572,469,642,370,261,975,040/260,778,528,006.40
  6. Step 6: Final answer
    x = 312,803,627,913.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.