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Finding the Fourth Proportional to 552,167.28, 761,971.19 and 310,463.69

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Solution

The fourth proportional to 552,167.28, 761,971.19 and 310,463.69 is: 428,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,167.28 : 761,971.19 = 310,463.69 : x
  2. Step 2: Convert to fraction form
    552,167.28/761,971.19 = 310,463.69/x
  3. Step 3: Cross multiply
    552,167.28x = 761,971.19 × 310,463.69
  4. Step 4: Simplify right side
    552,167.28x = 236,564,381,958.92
  5. Step 5: Solve for x
    x = 236,564,381,958.92/552,167.28
  6. Step 6: Final answer
    x = 428,428.83

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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.