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Finding the Fourth Proportional to 347,891.25, 480,382.45 and 261,700.82

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Solution

The fourth proportional to 347,891.25, 480,382.45 and 261,700.82 is: 361,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,891.25 : 480,382.45 = 261,700.82 : x
  2. Step 2: Convert to fraction form
    347,891.25/480,382.45 = 261,700.82/x
  3. Step 3: Cross multiply
    347,891.25x = 480,382.45 × 261,700.82
  4. Step 4: Simplify right side
    347,891.25x = 125,716,482,526.03
  5. Step 5: Solve for x
    x = 125,716,482,526.03/347,891.25
  6. Step 6: Final answer
    x = 361,367.18

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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.