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Finding the Fourth Proportional to 371,554.52, 557,156.21 and 143,956.76

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Solution

The fourth proportional to 371,554.52, 557,156.21 and 143,956.76 is: 215,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,554.52 : 557,156.21 = 143,956.76 : x
  2. Step 2: Convert to fraction form
    371,554.52/557,156.21 = 143,956.76/x
  3. Step 3: Cross multiply
    371,554.52x = 557,156.21 × 143,956.76
  4. Step 4: Simplify right side
    371,554.52x = 80,206,403,165.37
  5. Step 5: Solve for x
    x = 80,206,403,165.37/371,554.52
  6. Step 6: Final answer
    x = 215,867.12

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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.