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Finding the Fourth Proportional to 372,178.80, 558,397.80 and 161,881.20

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Solution

The fourth proportional to 372,178.80, 558,397.80 and 161,881.20 is: 242,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,178.80 : 558,397.80 = 161,881.20 : x
  2. Step 2: Convert to fraction form
    372,178.80/558,397.80 = 161,881.20/x
  3. Step 3: Cross multiply
    372,178.80x = 558,397.80 × 161,881.20
  4. Step 4: Simplify right side
    372,178.80x = 90,394,105,941.36
  5. Step 5: Solve for x
    x = 90,394,105,941.36/372,178.80
  6. Step 6: Final answer
    x = 242,878.17

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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.