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Finding the Fourth Proportional to 421,950.75, 632,926.13 and 126,462.75

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Solution

The fourth proportional to 421,950.75, 632,926.13 and 126,462.75 is: 189,694.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,950.75 : 632,926.13 = 126,462.75 : x
  2. Step 2: Convert to fraction form
    421,950.75/632,926.13 = 126,462.75/x
  3. Step 3: Cross multiply
    421,950.75x = 632,926.13 × 126,462.75
  4. Step 4: Simplify right side
    421,950.75x = 80,041,578,946.66
  5. Step 5: Solve for x
    x = 80,041,578,946.66/421,950.75
  6. Step 6: Final answer
    x = 189,694.13

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.