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Finding the Fourth Proportional to 181,666.40, 272,960.40 and 161,391.20

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Solution

The fourth proportional to 181,666.40, 272,960.40 and 161,391.20 is: 242,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,666.40 : 272,960.40 = 161,391.20 : x
  2. Step 2: Convert to fraction form
    181,666.40/272,960.40 = 161,391.20/x
  3. Step 3: Cross multiply
    181,666.40x = 272,960.40 × 161,391.20
  4. Step 4: Simplify right side
    181,666.40x = 44,053,406,508.48
  5. Step 5: Solve for x
    x = 44,053,406,508.48/181,666.40
  6. Step 6: Final answer
    x = 242,496.17

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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.