Home / 283,615.40-391,391.86-156,295.52

Finding the Fourth Proportional to 283,615.40, 391,391.86 and 156,295.52

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Solution

The fourth proportional to 283,615.40, 391,391.86 and 156,295.52 is: 215,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,615.40 : 391,391.86 = 156,295.52 : x
  2. Step 2: Convert to fraction form
    283,615.40/391,391.86 = 156,295.52/x
  3. Step 3: Cross multiply
    283,615.40x = 391,391.86 × 156,295.52
  4. Step 4: Simplify right side
    283,615.40x = 61,172,794,282.47
  5. Step 5: Solve for x
    x = 61,172,794,282.47/283,615.40
  6. Step 6: Final answer
    x = 215,689.25

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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.