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Finding the Fourth Proportional to 318,866.60, 477,414.16 and 160,615.28

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Solution

The fourth proportional to 318,866.60, 477,414.16 and 160,615.28 is: 240,476.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,866.60 : 477,414.16 = 160,615.28 : x
  2. Step 2: Convert to fraction form
    318,866.60/477,414.16 = 160,615.28/x
  3. Step 3: Cross multiply
    318,866.60x = 477,414.16 × 160,615.28
  4. Step 4: Simplify right side
    318,866.60x = 76,680,008,984.36
  5. Step 5: Solve for x
    x = 76,680,008,984.36/318,866.60
  6. Step 6: Final answer
    x = 240,476.77

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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.