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Finding the Fourth Proportional to 435,862.80, 653,640.60 and 155,389.20

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Solution

The fourth proportional to 435,862.80, 653,640.60 and 155,389.20 is: 233,029.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,862.80 : 653,640.60 = 155,389.20 : x
  2. Step 2: Convert to fraction form
    435,862.80/653,640.60 = 155,389.20/x
  3. Step 3: Cross multiply
    435,862.80x = 653,640.60 × 155,389.20
  4. Step 4: Simplify right side
    435,862.80x = 101,568,689,921.52
  5. Step 5: Solve for x
    x = 101,568,689,921.52/435,862.80
  6. Step 6: Final answer
    x = 233,029.04

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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.