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Finding the Fourth Proportional to 316,713.20, 474,407.40 and 148,377.20

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Solution

The fourth proportional to 316,713.20, 474,407.40 and 148,377.20 is: 222,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,713.20 : 474,407.40 = 148,377.20 : x
  2. Step 2: Convert to fraction form
    316,713.20/474,407.40 = 148,377.20/x
  3. Step 3: Cross multiply
    316,713.20x = 474,407.40 × 148,377.20
  4. Step 4: Simplify right side
    316,713.20x = 70,391,241,671.28
  5. Step 5: Solve for x
    x = 70,391,241,671.28/316,713.20
  6. Step 6: Final answer
    x = 222,255.47

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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.