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Finding the Fourth Proportional to 418,270.98, 627,129.09 and 151,999.86

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Solution

The fourth proportional to 418,270.98, 627,129.09 and 151,999.86 is: 227,898.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,270.98 : 627,129.09 = 151,999.86 : x
  2. Step 2: Convert to fraction form
    418,270.98/627,129.09 = 151,999.86/x
  3. Step 3: Cross multiply
    418,270.98x = 627,129.09 × 151,999.86
  4. Step 4: Simplify right side
    418,270.98x = 95,323,533,881.93
  5. Step 5: Solve for x
    x = 95,323,533,881.93/418,270.98
  6. Step 6: Final answer
    x = 227,898.99

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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.