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Finding the Fourth Proportional to 285,534.92, 428,303.34 and 72,302.73

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Solution

The fourth proportional to 285,534.92, 428,303.34 and 72,302.73 is: 108,454.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,534.92 : 428,303.34 = 72,302.73 : x
  2. Step 2: Convert to fraction form
    285,534.92/428,303.34 = 72,302.73/x
  3. Step 3: Cross multiply
    285,534.92x = 428,303.34 × 72,302.73
  4. Step 4: Simplify right side
    285,534.92x = 30,967,499,947.05
  5. Step 5: Solve for x
    x = 30,967,499,947.05/285,534.92
  6. Step 6: Final answer
    x = 108,454.34

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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.