Home / 285,981.83-394,641.77-156,917.47

Finding the Fourth Proportional to 285,981.83, 394,641.77 and 156,917.47

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Solution

The fourth proportional to 285,981.83, 394,641.77 and 156,917.47 is: 216,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,981.83 : 394,641.77 = 156,917.47 : x
  2. Step 2: Convert to fraction form
    285,981.83/394,641.77 = 156,917.47/x
  3. Step 3: Cross multiply
    285,981.83x = 394,641.77 × 156,917.47
  4. Step 4: Simplify right side
    285,981.83x = 61,926,186,333.53
  5. Step 5: Solve for x
    x = 61,926,186,333.53/285,981.83
  6. Step 6: Final answer
    x = 216,538.88

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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.