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Finding the Fourth Proportional to 225,129.40, 310,679.20 and 124,527.40

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Solution

The fourth proportional to 225,129.40, 310,679.20 and 124,527.40 is: 171,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,129.40 : 310,679.20 = 124,527.40 : x
  2. Step 2: Convert to fraction form
    225,129.40/310,679.20 = 124,527.40/x
  3. Step 3: Cross multiply
    225,129.40x = 310,679.20 × 124,527.40
  4. Step 4: Simplify right side
    225,129.40x = 38,688,073,010.08
  5. Step 5: Solve for x
    x = 38,688,073,010.08/225,129.40
  6. Step 6: Final answer
    x = 171,848.16

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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.