Home / 285,490.17-393,959.36-158,156.55

Finding the Fourth Proportional to 285,490.17, 393,959.36 and 158,156.55

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Solution

The fourth proportional to 285,490.17, 393,959.36 and 158,156.55 is: 218,246.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,490.17 : 393,959.36 = 158,156.55 : x
  2. Step 2: Convert to fraction form
    285,490.17/393,959.36 = 158,156.55/x
  3. Step 3: Cross multiply
    285,490.17x = 393,959.36 × 158,156.55
  4. Step 4: Simplify right side
    285,490.17x = 62,307,253,613.20
  5. Step 5: Solve for x
    x = 62,307,253,613.20/285,490.17
  6. Step 6: Final answer
    x = 218,246.58

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1.5x scale

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.