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Finding the Fourth Proportional to 268,890,329.20, 403,335,493.80 and 266,339,412.40

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Solution

The fourth proportional to 268,890,329.20, 403,335,493.80 and 266,339,412.40 is: 399,509,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,890,329.20 : 403,335,493.80 = 266,339,412.40 : x
  2. Step 2: Convert to fraction form
    268,890,329.20/403,335,493.80 = 266,339,412.40/x
  3. Step 3: Cross multiply
    268,890,329.20x = 403,335,493.80 × 266,339,412.40
  4. Step 4: Simplify right side
    268,890,329.20x = 107,424,138,418,755,856
  5. Step 5: Solve for x
    x = 107,424,138,418,755,856/268,890,329.20
  6. Step 6: Final answer
    x = 399,509,118.60

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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.