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Finding the Fourth Proportional to 285,235.59, 427,827.87 and 85,600.56

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Solution

The fourth proportional to 285,235.59, 427,827.87 and 85,600.56 is: 128,393.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,235.59 : 427,827.87 = 85,600.56 : x
  2. Step 2: Convert to fraction form
    285,235.59/427,827.87 = 85,600.56/x
  3. Step 3: Cross multiply
    285,235.59x = 427,827.87 × 85,600.56
  4. Step 4: Simplify right side
    285,235.59x = 36,622,305,255.61
  5. Step 5: Solve for x
    x = 36,622,305,255.61/285,235.59
  6. Step 6: Final answer
    x = 128,393.18

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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.