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Finding the Fourth Proportional to 435,740.40, 653,610.60 and 155,221.20

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Solution

The fourth proportional to 435,740.40, 653,610.60 and 155,221.20 is: 232,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,740.40 : 653,610.60 = 155,221.20 : x
  2. Step 2: Convert to fraction form
    435,740.40/653,610.60 = 155,221.20/x
  3. Step 3: Cross multiply
    435,740.40x = 653,610.60 × 155,221.20
  4. Step 4: Simplify right side
    435,740.40x = 101,454,221,664.72
  5. Step 5: Solve for x
    x = 101,454,221,664.72/435,740.40
  6. Step 6: Final answer
    x = 232,831.80

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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.