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Finding the Fourth Proportional to 318,868.60, 477,417.16 and 160,617.28

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Solution

The fourth proportional to 318,868.60, 477,417.16 and 160,617.28 is: 240,479.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,868.60 : 477,417.16 = 160,617.28 : x
  2. Step 2: Convert to fraction form
    318,868.60/477,417.16 = 160,617.28/x
  3. Step 3: Cross multiply
    318,868.60x = 477,417.16 × 160,617.28
  4. Step 4: Simplify right side
    318,868.60x = 76,681,445,664.52
  5. Step 5: Solve for x
    x = 76,681,445,664.52/318,868.60
  6. Step 6: Final answer
    x = 240,479.76

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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.