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Finding the Fourth Proportional to 379,479.77, 523,755.18 and 243,685.29

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Solution

The fourth proportional to 379,479.77, 523,755.18 and 243,685.29 is: 336,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,479.77 : 523,755.18 = 243,685.29 : x
  2. Step 2: Convert to fraction form
    379,479.77/523,755.18 = 243,685.29/x
  3. Step 3: Cross multiply
    379,479.77x = 523,755.18 × 243,685.29
  4. Step 4: Simplify right side
    379,479.77x = 127,631,434,891.38
  5. Step 5: Solve for x
    x = 127,631,434,891.38/379,479.77
  6. Step 6: Final answer
    x = 336,332.65

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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.