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Finding the Fourth Proportional to 343,397.07, 515,414.55 and 175,043.88

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Solution

The fourth proportional to 343,397.07, 515,414.55 and 175,043.88 is: 262,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,397.07 : 515,414.55 = 175,043.88 : x
  2. Step 2: Convert to fraction form
    343,397.07/515,414.55 = 175,043.88/x
  3. Step 3: Cross multiply
    343,397.07x = 515,414.55 × 175,043.88
  4. Step 4: Simplify right side
    343,397.07x = 90,220,162,640.45
  5. Step 5: Solve for x
    x = 90,220,162,640.45/343,397.07
  6. Step 6: Final answer
    x = 262,728.40

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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.