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Finding the Fourth Proportional to 384,551.66, 530,691.99 and 212,480.71

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Solution

The fourth proportional to 384,551.66, 530,691.99 and 212,480.71 is: 293,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,551.66 : 530,691.99 = 212,480.71 : x
  2. Step 2: Convert to fraction form
    384,551.66/530,691.99 = 212,480.71/x
  3. Step 3: Cross multiply
    384,551.66x = 530,691.99 × 212,480.71
  4. Step 4: Simplify right side
    384,551.66x = 112,761,810,826.51
  5. Step 5: Solve for x
    x = 112,761,810,826.51/384,551.66
  6. Step 6: Final answer
    x = 293,229.29

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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.