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Finding the Fourth Proportional to 363,920.20, 545,880.30 and 304,871.20

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Solution

The fourth proportional to 363,920.20, 545,880.30 and 304,871.20 is: 457,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,920.20 : 545,880.30 = 304,871.20 : x
  2. Step 2: Convert to fraction form
    363,920.20/545,880.30 = 304,871.20/x
  3. Step 3: Cross multiply
    363,920.20x = 545,880.30 × 304,871.20
  4. Step 4: Simplify right side
    363,920.20x = 166,423,182,117.36
  5. Step 5: Solve for x
    x = 166,423,182,117.36/363,920.20
  6. Step 6: Final answer
    x = 457,306.80

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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.