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Finding the Fourth Proportional to 363,954.20, 545,931.30 and 343,287.05

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Solution

The fourth proportional to 363,954.20, 545,931.30 and 343,287.05 is: 514,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,954.20 : 545,931.30 = 343,287.05 : x
  2. Step 2: Convert to fraction form
    363,954.20/545,931.30 = 343,287.05/x
  3. Step 3: Cross multiply
    363,954.20x = 545,931.30 × 343,287.05
  4. Step 4: Simplify right side
    363,954.20x = 187,411,145,479.67
  5. Step 5: Solve for x
    x = 187,411,145,479.67/363,954.20
  6. Step 6: Final answer
    x = 514,930.58

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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.