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Finding the Fourth Proportional to 385,542.90, 532,049.13 and 215,777.03

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Solution

The fourth proportional to 385,542.90, 532,049.13 and 215,777.03 is: 297,772.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,542.90 : 532,049.13 = 215,777.03 : x
  2. Step 2: Convert to fraction form
    385,542.90/532,049.13 = 215,777.03/x
  3. Step 3: Cross multiply
    385,542.90x = 532,049.13 × 215,777.03
  4. Step 4: Simplify right side
    385,542.90x = 114,803,978,425.24
  5. Step 5: Solve for x
    x = 114,803,978,425.24/385,542.90
  6. Step 6: Final answer
    x = 297,772.25

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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.