Home / 260,706,890.40-391,060,335.60-139,774,538.40

Finding the Fourth Proportional to 260,706,890.40, 391,060,335.60 and 139,774,538.40

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Solution

The fourth proportional to 260,706,890.40, 391,060,335.60 and 139,774,538.40 is: 209,661,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,706,890.40 : 391,060,335.60 = 139,774,538.40 : x
  2. Step 2: Convert to fraction form
    260,706,890.40/391,060,335.60 = 139,774,538.40/x
  3. Step 3: Cross multiply
    260,706,890.40x = 391,060,335.60 × 139,774,538.40
  4. Step 4: Simplify right side
    260,706,890.40x = 54,660,277,895,039,096
  5. Step 5: Solve for x
    x = 54,660,277,895,039,096/260,706,890.40
  6. Step 6: Final answer
    x = 209,661,807.60

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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.