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Finding the Fourth Proportional to 253,801.52, 380,874.56 and 135,557.76

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Solution

The fourth proportional to 253,801.52, 380,874.56 and 135,557.76 is: 203,428.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,801.52 : 380,874.56 = 135,557.76 : x
  2. Step 2: Convert to fraction form
    253,801.52/380,874.56 = 135,557.76/x
  3. Step 3: Cross multiply
    253,801.52x = 380,874.56 × 135,557.76
  4. Step 4: Simplify right side
    253,801.52x = 51,630,502,194.59
  5. Step 5: Solve for x
    x = 51,630,502,194.59/253,801.52
  6. Step 6: Final answer
    x = 203,428.66

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1.5x scale

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.