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Finding the Fourth Proportional to 530,428.88, 732,026.76 and 304,078.16

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Solution

The fourth proportional to 530,428.88, 732,026.76 and 304,078.16 is: 419,647.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,428.88 : 732,026.76 = 304,078.16 : x
  2. Step 2: Convert to fraction form
    530,428.88/732,026.76 = 304,078.16/x
  3. Step 3: Cross multiply
    530,428.88x = 732,026.76 × 304,078.16
  4. Step 4: Simplify right side
    530,428.88x = 222,593,350,251.56
  5. Step 5: Solve for x
    x = 222,593,350,251.56/530,428.88
  6. Step 6: Final answer
    x = 419,647.87

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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.