Home / 218,208.63-301,123.18-126,331.78

Finding the Fourth Proportional to 218,208.63, 301,123.18 and 126,331.78

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Solution

The fourth proportional to 218,208.63, 301,123.18 and 126,331.78 is: 174,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,208.63 : 301,123.18 = 126,331.78 : x
  2. Step 2: Convert to fraction form
    218,208.63/301,123.18 = 126,331.78/x
  3. Step 3: Cross multiply
    218,208.63x = 301,123.18 × 126,331.78
  4. Step 4: Simplify right side
    218,208.63x = 38,041,427,765.64
  5. Step 5: Solve for x
    x = 38,041,427,765.64/218,208.63
  6. Step 6: Final answer
    x = 174,335.12

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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.