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Finding the Fourth Proportional to 356,077.80, 534,419.10 and 145,866.60

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Solution

The fourth proportional to 356,077.80, 534,419.10 and 145,866.60 is: 218,923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,077.80 : 534,419.10 = 145,866.60 : x
  2. Step 2: Convert to fraction form
    356,077.80/534,419.10 = 145,866.60/x
  3. Step 3: Cross multiply
    356,077.80x = 534,419.10 × 145,866.60
  4. Step 4: Simplify right side
    356,077.80x = 77,953,897,092.06
  5. Step 5: Solve for x
    x = 77,953,897,092.06/356,077.80
  6. Step 6: Final answer
    x = 218,923.78

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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.