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Finding the Fourth Proportional to 402,241.20, 603,442.80 and 117,931.20

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Solution

The fourth proportional to 402,241.20, 603,442.80 and 117,931.20 is: 176,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,241.20 : 603,442.80 = 117,931.20 : x
  2. Step 2: Convert to fraction form
    402,241.20/603,442.80 = 117,931.20/x
  3. Step 3: Cross multiply
    402,241.20x = 603,442.80 × 117,931.20
  4. Step 4: Simplify right side
    402,241.20x = 71,164,733,535.36
  5. Step 5: Solve for x
    x = 71,164,733,535.36/402,241.20
  6. Step 6: Final answer
    x = 176,920.55

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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.