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Finding the Fourth Proportional to 225,330.32, 310,938.54 and 129,773

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Solution

The fourth proportional to 225,330.32, 310,938.54 and 129,773 is: 179,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,330.32 : 310,938.54 = 129,773 : x
  2. Step 2: Convert to fraction form
    225,330.32/310,938.54 = 129,773/x
  3. Step 3: Cross multiply
    225,330.32x = 310,938.54 × 129,773
  4. Step 4: Simplify right side
    225,330.32x = 40,351,427,151.42
  5. Step 5: Solve for x
    x = 40,351,427,151.42/225,330.32
  6. Step 6: Final answer
    x = 179,076.78

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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.