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Finding the Fourth Proportional to 502,645.23, 753,967.37 and 128,667.63

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Solution

The fourth proportional to 502,645.23, 753,967.37 and 128,667.63 is: 193,001.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,645.23 : 753,967.37 = 128,667.63 : x
  2. Step 2: Convert to fraction form
    502,645.23/753,967.37 = 128,667.63/x
  3. Step 3: Cross multiply
    502,645.23x = 753,967.37 × 128,667.63
  4. Step 4: Simplify right side
    502,645.23x = 97,011,193,951.90
  5. Step 5: Solve for x
    x = 97,011,193,951.90/502,645.23
  6. Step 6: Final answer
    x = 193,001.32

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Similar ratio
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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.