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Finding the Fourth Proportional to 285,200.15, 428,220.77 and 159,086.79

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Solution

The fourth proportional to 285,200.15, 428,220.77 and 159,086.79 is: 238,864.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,200.15 : 428,220.77 = 159,086.79 : x
  2. Step 2: Convert to fraction form
    285,200.15/428,220.77 = 159,086.79/x
  3. Step 3: Cross multiply
    285,200.15x = 428,220.77 × 159,086.79
  4. Step 4: Simplify right side
    285,200.15x = 68,124,266,915.19
  5. Step 5: Solve for x
    x = 68,124,266,915.19/285,200.15
  6. Step 6: Final answer
    x = 238,864.77

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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.