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Finding the Fourth Proportional to 610,531.20, 915,792.48 and 189,806.40

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Solution

The fourth proportional to 610,531.20, 915,792.48 and 189,806.40 is: 284,708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,531.20 : 915,792.48 = 189,806.40 : x
  2. Step 2: Convert to fraction form
    610,531.20/915,792.48 = 189,806.40/x
  3. Step 3: Cross multiply
    610,531.20x = 915,792.48 × 189,806.40
  4. Step 4: Simplify right side
    610,531.20x = 173,823,273,775.87
  5. Step 5: Solve for x
    x = 173,823,273,775.87/610,531.20
  6. Step 6: Final answer
    x = 284,708.26

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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.