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Finding the Fourth Proportional to 384,551.29, 530,691.47 and 212,480.34

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Solution

The fourth proportional to 384,551.29, 530,691.47 and 212,480.34 is: 293,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,551.29 : 530,691.47 = 212,480.34 : x
  2. Step 2: Convert to fraction form
    384,551.29/530,691.47 = 212,480.34/x
  3. Step 3: Cross multiply
    384,551.29x = 530,691.47 × 212,480.34
  4. Step 4: Simplify right side
    384,551.29x = 112,761,502,787.41
  5. Step 5: Solve for x
    x = 112,761,502,787.41/384,551.29
  6. Step 6: Final answer
    x = 293,228.78

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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.