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Finding the Fourth Proportional to 610,638.47, 915,960.04 and 255,403.29

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Solution

The fourth proportional to 610,638.47, 915,960.04 and 255,403.29 is: 383,105.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,638.47 : 915,960.04 = 255,403.29 : x
  2. Step 2: Convert to fraction form
    610,638.47/915,960.04 = 255,403.29/x
  3. Step 3: Cross multiply
    610,638.47x = 915,960.04 × 255,403.29
  4. Step 4: Simplify right side
    610,638.47x = 233,939,207,086.02
  5. Step 5: Solve for x
    x = 233,939,207,086.02/610,638.47
  6. Step 6: Final answer
    x = 383,105.91

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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.