Home / 420,837.53-631,258.72-140,353.97

Finding the Fourth Proportional to 420,837.53, 631,258.72 and 140,353.97

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Solution

The fourth proportional to 420,837.53, 631,258.72 and 140,353.97 is: 210,531.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,837.53 : 631,258.72 = 140,353.97 : x
  2. Step 2: Convert to fraction form
    420,837.53/631,258.72 = 140,353.97/x
  3. Step 3: Cross multiply
    420,837.53x = 631,258.72 × 140,353.97
  4. Step 4: Simplify right side
    420,837.53x = 88,599,663,941.94
  5. Step 5: Solve for x
    x = 88,599,663,941.94/420,837.53
  6. Step 6: Final answer
    x = 210,531.76

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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.