Home / 257,143.20-385,655.40-97,236.24

Finding the Fourth Proportional to 257,143.20, 385,655.40 and 97,236.24

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Solution

The fourth proportional to 257,143.20, 385,655.40 and 97,236.24 is: 145,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,143.20 : 385,655.40 = 97,236.24 : x
  2. Step 2: Convert to fraction form
    257,143.20/385,655.40 = 97,236.24/x
  3. Step 3: Cross multiply
    257,143.20x = 385,655.40 × 97,236.24
  4. Step 4: Simplify right side
    257,143.20x = 37,499,681,031.70
  5. Step 5: Solve for x
    x = 37,499,681,031.70/257,143.20
  6. Step 6: Final answer
    x = 145,831.90

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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.