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Finding the Fourth Proportional to 285,193.74, 428,211.12 and 159,080.38

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Solution

The fourth proportional to 285,193.74, 428,211.12 and 159,080.38 is: 238,855.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,193.74 : 428,211.12 = 159,080.38 : x
  2. Step 2: Convert to fraction form
    285,193.74/428,211.12 = 159,080.38/x
  3. Step 3: Cross multiply
    285,193.74x = 428,211.12 × 159,080.38
  4. Step 4: Simplify right side
    285,193.74x = 68,119,987,689.83
  5. Step 5: Solve for x
    x = 68,119,987,689.83/285,193.74
  6. Step 6: Final answer
    x = 238,855.13

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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.