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Finding the Fourth Proportional to 260,851.60, 391,277.40 and 257,352.40

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Solution

The fourth proportional to 260,851.60, 391,277.40 and 257,352.40 is: 386,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,851.60 : 391,277.40 = 257,352.40 : x
  2. Step 2: Convert to fraction form
    260,851.60/391,277.40 = 257,352.40/x
  3. Step 3: Cross multiply
    260,851.60x = 391,277.40 × 257,352.40
  4. Step 4: Simplify right side
    260,851.60x = 100,696,177,955.76
  5. Step 5: Solve for x
    x = 100,696,177,955.76/260,851.60
  6. Step 6: Final answer
    x = 386,028.60

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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.