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Finding the Fourth Proportional to 318,205.20, 477,205.79 and 104,925.20

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Solution

The fourth proportional to 318,205.20, 477,205.79 and 104,925.20 is: 157,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,205.20 : 477,205.79 = 104,925.20 : x
  2. Step 2: Convert to fraction form
    318,205.20/477,205.79 = 104,925.20/x
  3. Step 3: Cross multiply
    318,205.20x = 477,205.79 × 104,925.20
  4. Step 4: Simplify right side
    318,205.20x = 50,070,912,126.15
  5. Step 5: Solve for x
    x = 50,070,912,126.15/318,205.20
  6. Step 6: Final answer
    x = 157,354.16

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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.