Home / 283,632.12-391,410.36-156,307.86

Finding the Fourth Proportional to 283,632.12, 391,410.36 and 156,307.86

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Solution

The fourth proportional to 283,632.12, 391,410.36 and 156,307.86 is: 215,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,632.12 : 391,410.36 = 156,307.86 : x
  2. Step 2: Convert to fraction form
    283,632.12/391,410.36 = 156,307.86/x
  3. Step 3: Cross multiply
    283,632.12x = 391,410.36 × 156,307.86
  4. Step 4: Simplify right side
    283,632.12x = 61,180,515,753.43
  5. Step 5: Solve for x
    x = 61,180,515,753.43/283,632.12
  6. Step 6: Final answer
    x = 215,703.76

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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.