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Finding the Fourth Proportional to 225,258.89, 310,892.18 and 128,462.95

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Solution

The fourth proportional to 225,258.89, 310,892.18 and 128,462.95 is: 177,298.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,258.89 : 310,892.18 = 128,462.95 : x
  2. Step 2: Convert to fraction form
    225,258.89/310,892.18 = 128,462.95/x
  3. Step 3: Cross multiply
    225,258.89x = 310,892.18 × 128,462.95
  4. Step 4: Simplify right side
    225,258.89x = 39,938,126,574.73
  5. Step 5: Solve for x
    x = 39,938,126,574.73/225,258.89
  6. Step 6: Final answer
    x = 177,298.78

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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.