Home / 283,621.78-391,406.27-156,305.58

Finding the Fourth Proportional to 283,621.78, 391,406.27 and 156,305.58

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Solution

The fourth proportional to 283,621.78, 391,406.27 and 156,305.58 is: 215,706.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,621.78 : 391,406.27 = 156,305.58 : x
  2. Step 2: Convert to fraction form
    283,621.78/391,406.27 = 156,305.58/x
  3. Step 3: Cross multiply
    283,621.78x = 391,406.27 × 156,305.58
  4. Step 4: Simplify right side
    283,621.78x = 61,178,981,798.69
  5. Step 5: Solve for x
    x = 61,178,981,798.69/283,621.78
  6. Step 6: Final answer
    x = 215,706.22

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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.