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Finding the Fourth Proportional to 285,227.76, 427,815.99 and 85,592.73

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Solution

The fourth proportional to 285,227.76, 427,815.99 and 85,592.73 is: 128,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,227.76 : 427,815.99 = 85,592.73 : x
  2. Step 2: Convert to fraction form
    285,227.76/427,815.99 = 85,592.73/x
  3. Step 3: Cross multiply
    285,227.76x = 427,815.99 × 85,592.73
  4. Step 4: Simplify right side
    285,227.76x = 36,617,938,521.75
  5. Step 5: Solve for x
    x = 36,617,938,521.75/285,227.76
  6. Step 6: Final answer
    x = 128,381.40

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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.