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Finding the Fourth Proportional to 375,263.38, 517,941.66 and 345,000.78

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Solution

The fourth proportional to 375,263.38, 517,941.66 and 345,000.78 is: 476,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,263.38 : 517,941.66 = 345,000.78 : x
  2. Step 2: Convert to fraction form
    375,263.38/517,941.66 = 345,000.78/x
  3. Step 3: Cross multiply
    375,263.38x = 517,941.66 × 345,000.78
  4. Step 4: Simplify right side
    375,263.38x = 178,690,276,694.50
  5. Step 5: Solve for x
    x = 178,690,276,694.50/375,263.38
  6. Step 6: Final answer
    x = 476,172.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.