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Finding the Fourth Proportional to 310,525.61, 428,462 and 181,439.13

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Solution

The fourth proportional to 310,525.61, 428,462 and 181,439.13 is: 250,348.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,525.61 : 428,462 = 181,439.13 : x
  2. Step 2: Convert to fraction form
    310,525.61/428,462 = 181,439.13/x
  3. Step 3: Cross multiply
    310,525.61x = 428,462 × 181,439.13
  4. Step 4: Simplify right side
    310,525.61x = 77,739,770,375.75
  5. Step 5: Solve for x
    x = 77,739,770,375.75/310,525.61
  6. Step 6: Final answer
    x = 250,348.98

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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.