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Finding the Fourth Proportional to 616,862.96, 925,300.92 and 217,429.28

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Solution

The fourth proportional to 616,862.96, 925,300.92 and 217,429.28 is: 326,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,862.96 : 925,300.92 = 217,429.28 : x
  2. Step 2: Convert to fraction form
    616,862.96/925,300.92 = 217,429.28/x
  3. Step 3: Cross multiply
    616,862.96x = 925,300.92 × 217,429.28
  4. Step 4: Simplify right side
    616,862.96x = 201,187,512,818.94
  5. Step 5: Solve for x
    x = 201,187,512,818.94/616,862.96
  6. Step 6: Final answer
    x = 326,146.20

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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.