Home / 421,402.74-631,972.35-140,854.38

Finding the Fourth Proportional to 421,402.74, 631,972.35 and 140,854.38

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Solution

The fourth proportional to 421,402.74, 631,972.35 and 140,854.38 is: 211,237.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,402.74 : 631,972.35 = 140,854.38 : x
  2. Step 2: Convert to fraction form
    421,402.74/631,972.35 = 140,854.38/x
  3. Step 3: Cross multiply
    421,402.74x = 631,972.35 × 140,854.38
  4. Step 4: Simplify right side
    421,402.74x = 89,016,073,536.39
  5. Step 5: Solve for x
    x = 89,016,073,536.39/421,402.74
  6. Step 6: Final answer
    x = 211,237.53

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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.