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Finding the Fourth Proportional to 310,737.47, 428,753.39 and 181,651.01

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Solution

The fourth proportional to 310,737.47, 428,753.39 and 181,651.01 is: 250,640.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,737.47 : 428,753.39 = 181,651.01 : x
  2. Step 2: Convert to fraction form
    310,737.47/428,753.39 = 181,651.01/x
  3. Step 3: Cross multiply
    310,737.47x = 428,753.39 × 181,651.01
  4. Step 4: Simplify right side
    310,737.47x = 77,883,483,282.40
  5. Step 5: Solve for x
    x = 77,883,483,282.40/310,737.47
  6. Step 6: Final answer
    x = 250,640.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.