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Finding the Fourth Proportional to 208,158.87, 312,257.90 and 58,398.58

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Solution

The fourth proportional to 208,158.87, 312,257.90 and 58,398.58 is: 87,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,158.87 : 312,257.90 = 58,398.58 : x
  2. Step 2: Convert to fraction form
    208,158.87/312,257.90 = 58,398.58/x
  3. Step 3: Cross multiply
    208,158.87x = 312,257.90 × 58,398.58
  4. Step 4: Simplify right side
    208,158.87x = 18,235,418,490.10
  5. Step 5: Solve for x
    x = 18,235,418,490.10/208,158.87
  6. Step 6: Final answer
    x = 87,603.37

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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.