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Finding the Fourth Proportional to 610,686.72, 915,359.40 and 255,926.16

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Solution

The fourth proportional to 610,686.72, 915,359.40 and 255,926.16 is: 383,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,686.72 : 915,359.40 = 255,926.16 : x
  2. Step 2: Convert to fraction form
    610,686.72/915,359.40 = 255,926.16/x
  3. Step 3: Cross multiply
    610,686.72x = 915,359.40 × 255,926.16
  4. Step 4: Simplify right side
    610,686.72x = 234,264,416,261.90
  5. Step 5: Solve for x
    x = 234,264,416,261.90/610,686.72
  6. Step 6: Final answer
    x = 383,608.17

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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.