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Finding the Fourth Proportional to 266,815,233.60, 399,625,653.60 and 219,039,489.60

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Solution

The fourth proportional to 266,815,233.60, 399,625,653.60 and 219,039,489.60 is: 328,068,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,815,233.60 : 399,625,653.60 = 219,039,489.60 : x
  2. Step 2: Convert to fraction form
    266,815,233.60/399,625,653.60 = 219,039,489.60/x
  3. Step 3: Cross multiply
    266,815,233.60x = 399,625,653.60 × 219,039,489.60
  4. Step 4: Simplify right side
    266,815,233.60x = 87,533,799,195,610,400
  5. Step 5: Solve for x
    x = 87,533,799,195,610,400/266,815,233.60
  6. Step 6: Final answer
    x = 328,068,971.23

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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.