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Finding the Fourth Proportional to 442,362.48, 663,347.88 and 126,747.76

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Solution

The fourth proportional to 442,362.48, 663,347.88 and 126,747.76 is: 190,065.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,362.48 : 663,347.88 = 126,747.76 : x
  2. Step 2: Convert to fraction form
    442,362.48/663,347.88 = 126,747.76/x
  3. Step 3: Cross multiply
    442,362.48x = 663,347.88 × 126,747.76
  4. Step 4: Simplify right side
    442,362.48x = 84,077,857,890.75
  5. Step 5: Solve for x
    x = 84,077,857,890.75/442,362.48
  6. Step 6: Final answer
    x = 190,065.53

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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.