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Finding the Fourth Proportional to 225,633.60, 311,373.72 and 125,031.60

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Solution

The fourth proportional to 225,633.60, 311,373.72 and 125,031.60 is: 172,543.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,633.60 : 311,373.72 = 125,031.60 : x
  2. Step 2: Convert to fraction form
    225,633.60/311,373.72 = 125,031.60/x
  3. Step 3: Cross multiply
    225,633.60x = 311,373.72 × 125,031.60
  4. Step 4: Simplify right side
    225,633.60x = 38,931,554,409.55
  5. Step 5: Solve for x
    x = 38,931,554,409.55/225,633.60
  6. Step 6: Final answer
    x = 172,543.25

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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.