Home / 283,432.72-391,137.16-156,108.32

Finding the Fourth Proportional to 283,432.72, 391,137.16 and 156,108.32

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Solution

The fourth proportional to 283,432.72, 391,137.16 and 156,108.32 is: 215,429.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,432.72 : 391,137.16 = 156,108.32 : x
  2. Step 2: Convert to fraction form
    283,432.72/391,137.16 = 156,108.32/x
  3. Step 3: Cross multiply
    283,432.72x = 391,137.16 × 156,108.32
  4. Step 4: Simplify right side
    283,432.72x = 61,059,764,055.81
  5. Step 5: Solve for x
    x = 61,059,764,055.81/283,432.72
  6. Step 6: Final answer
    x = 215,429.48

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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.