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Finding the Fourth Proportional to 625,990.47, 938,975.23 and 199,520.47

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Solution

The fourth proportional to 625,990.47, 938,975.23 and 199,520.47 is: 299,277.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,990.47 : 938,975.23 = 199,520.47 : x
  2. Step 2: Convert to fraction form
    625,990.47/938,975.23 = 199,520.47/x
  3. Step 3: Cross multiply
    625,990.47x = 938,975.23 × 199,520.47
  4. Step 4: Simplify right side
    625,990.47x = 187,344,779,207.96
  5. Step 5: Solve for x
    x = 187,344,779,207.96/625,990.47
  6. Step 6: Final answer
    x = 299,277.37

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1.5x scale

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.