Home / 285,724.76-394,278.91-156,642.55

Finding the Fourth Proportional to 285,724.76, 394,278.91 and 156,642.55

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Solution

The fourth proportional to 285,724.76, 394,278.91 and 156,642.55 is: 216,155.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,724.76 : 394,278.91 = 156,642.55 : x
  2. Step 2: Convert to fraction form
    285,724.76/394,278.91 = 156,642.55/x
  3. Step 3: Cross multiply
    285,724.76x = 394,278.91 × 156,642.55
  4. Step 4: Simplify right side
    285,724.76x = 61,760,852,496.32
  5. Step 5: Solve for x
    x = 61,760,852,496.32/285,724.76
  6. Step 6: Final answer
    x = 216,155.06

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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.