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Finding the Fourth Proportional to 387,273.72, 581,137.96 and 162,616.88

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Solution

The fourth proportional to 387,273.72, 581,137.96 and 162,616.88 is: 244,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,273.72 : 581,137.96 = 162,616.88 : x
  2. Step 2: Convert to fraction form
    387,273.72/581,137.96 = 162,616.88/x
  3. Step 3: Cross multiply
    387,273.72x = 581,137.96 × 162,616.88
  4. Step 4: Simplify right side
    387,273.72x = 94,502,841,904.76
  5. Step 5: Solve for x
    x = 94,502,841,904.76/387,273.72
  6. Step 6: Final answer
    x = 244,020.80

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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.