Home / 285,212.70-393,598.18-156,149.02

Finding the Fourth Proportional to 285,212.70, 393,598.18 and 156,149.02

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Solution

The fourth proportional to 285,212.70, 393,598.18 and 156,149.02 is: 215,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,212.70 : 393,598.18 = 156,149.02 : x
  2. Step 2: Convert to fraction form
    285,212.70/393,598.18 = 156,149.02/x
  3. Step 3: Cross multiply
    285,212.70x = 393,598.18 × 156,149.02
  4. Step 4: Simplify right side
    285,212.70x = 61,459,970,080.78
  5. Step 5: Solve for x
    x = 61,459,970,080.78/285,212.70
  6. Step 6: Final answer
    x = 215,488.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.