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Finding the Fourth Proportional to 285,191.61, 428,207.93 and 159,078.25

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Solution

The fourth proportional to 285,191.61, 428,207.93 and 159,078.25 is: 238,851.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,191.61 : 428,207.93 = 159,078.25 : x
  2. Step 2: Convert to fraction form
    285,191.61/428,207.93 = 159,078.25/x
  3. Step 3: Cross multiply
    285,191.61x = 428,207.93 × 159,078.25
  4. Step 4: Simplify right side
    285,191.61x = 68,118,568,140.52
  5. Step 5: Solve for x
    x = 68,118,568,140.52/285,191.61
  6. Step 6: Final answer
    x = 238,851.94

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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.