Home / 285,191.16-428,207.28-159,077.80

Finding the Fourth Proportional to 285,191.16, 428,207.28 and 159,077.80

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Solution

The fourth proportional to 285,191.16, 428,207.28 and 159,077.80 is: 238,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,191.16 : 428,207.28 = 159,077.80 : x
  2. Step 2: Convert to fraction form
    285,191.16/428,207.28 = 159,077.80/x
  3. Step 3: Cross multiply
    285,191.16x = 428,207.28 × 159,077.80
  4. Step 4: Simplify right side
    285,191.16x = 68,118,271,985.10
  5. Step 5: Solve for x
    x = 68,118,271,985.10/285,191.16
  6. Step 6: Final answer
    x = 238,851.28

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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.