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Finding the Fourth Proportional to 482,572.28, 723,988.02 and 212,723.48

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Solution

The fourth proportional to 482,572.28, 723,988.02 and 212,723.48 is: 319,142.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,572.28 : 723,988.02 = 212,723.48 : x
  2. Step 2: Convert to fraction form
    482,572.28/723,988.02 = 212,723.48/x
  3. Step 3: Cross multiply
    482,572.28x = 723,988.02 × 212,723.48
  4. Step 4: Simplify right side
    482,572.28x = 154,009,251,092.71
  5. Step 5: Solve for x
    x = 154,009,251,092.71/482,572.28
  6. Step 6: Final answer
    x = 319,142.35

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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.