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Finding the Fourth Proportional to 225,489.78, 311,158.77 and 124,885.62

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Solution

The fourth proportional to 225,489.78, 311,158.77 and 124,885.62 is: 172,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,489.78 : 311,158.77 = 124,885.62 : x
  2. Step 2: Convert to fraction form
    225,489.78/311,158.77 = 124,885.62/x
  3. Step 3: Cross multiply
    225,489.78x = 311,158.77 × 124,885.62
  4. Step 4: Simplify right side
    225,489.78x = 38,859,255,909.89
  5. Step 5: Solve for x
    x = 38,859,255,909.89/225,489.78
  6. Step 6: Final answer
    x = 172,332.67

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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.