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Finding the Fourth Proportional to 625,866.32, 938,700.24 and 199,346.80

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Solution

The fourth proportional to 625,866.32, 938,700.24 and 199,346.80 is: 298,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,866.32 : 938,700.24 = 199,346.80 : x
  2. Step 2: Convert to fraction form
    625,866.32/938,700.24 = 199,346.80/x
  3. Step 3: Cross multiply
    625,866.32x = 938,700.24 × 199,346.80
  4. Step 4: Simplify right side
    625,866.32x = 187,126,889,003.23
  5. Step 5: Solve for x
    x = 187,126,889,003.23/625,866.32
  6. Step 6: Final answer
    x = 298,988.59

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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.