Home / 308,885.28-426,177.30-212,118.24

Finding the Fourth Proportional to 308,885.28, 426,177.30 and 212,118.24

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Solution

The fourth proportional to 308,885.28, 426,177.30 and 212,118.24 is: 292,665.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,885.28 : 426,177.30 = 212,118.24 : x
  2. Step 2: Convert to fraction form
    308,885.28/426,177.30 = 212,118.24/x
  3. Step 3: Cross multiply
    308,885.28x = 426,177.30 × 212,118.24
  4. Step 4: Simplify right side
    308,885.28x = 90,399,978,803.95
  5. Step 5: Solve for x
    x = 90,399,978,803.95/308,885.28
  6. Step 6: Final answer
    x = 292,665.22

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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.