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Finding the Fourth Proportional to 269,495,916.40, 403,488,047.40 and 261,937,644.40

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Solution

The fourth proportional to 269,495,916.40, 403,488,047.40 and 261,937,644.40 is: 392,171,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,495,916.40 : 403,488,047.40 = 261,937,644.40 : x
  2. Step 2: Convert to fraction form
    269,495,916.40/403,488,047.40 = 261,937,644.40/x
  3. Step 3: Cross multiply
    269,495,916.40x = 403,488,047.40 × 261,937,644.40
  4. Step 4: Simplify right side
    269,495,916.40x = 105,688,708,679,511,536
  5. Step 5: Solve for x
    x = 105,688,708,679,511,536/269,495,916.40
  6. Step 6: Final answer
    x = 392,171,837.30

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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.