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Finding the Fourth Proportional to 363,391.18, 545,973.71 and 343,248.91

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Solution

The fourth proportional to 363,391.18, 545,973.71 and 343,248.91 is: 515,711.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,391.18 : 545,973.71 = 343,248.91 : x
  2. Step 2: Convert to fraction form
    363,391.18/545,973.71 = 343,248.91/x
  3. Step 3: Cross multiply
    363,391.18x = 545,973.71 × 343,248.91
  4. Step 4: Simplify right side
    363,391.18x = 187,404,880,846.16
  5. Step 5: Solve for x
    x = 187,404,880,846.16/363,391.18
  6. Step 6: Final answer
    x = 515,711.14

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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.