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Finding the Fourth Proportional to 316,714.20, 474,408.90 and 148,378.20

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Solution

The fourth proportional to 316,714.20, 474,408.90 and 148,378.20 is: 222,256.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,714.20 : 474,408.90 = 148,378.20 : x
  2. Step 2: Convert to fraction form
    316,714.20/474,408.90 = 148,378.20/x
  3. Step 3: Cross multiply
    316,714.20x = 474,408.90 × 148,378.20
  4. Step 4: Simplify right side
    316,714.20x = 70,391,938,645.98
  5. Step 5: Solve for x
    x = 70,391,938,645.98/316,714.20
  6. Step 6: Final answer
    x = 222,256.97

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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.