Home / 283,431.12-391,134.96-156,106.72

Finding the Fourth Proportional to 283,431.12, 391,134.96 and 156,106.72

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Solution

The fourth proportional to 283,431.12, 391,134.96 and 156,106.72 is: 215,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,431.12 : 391,134.96 = 156,106.72 : x
  2. Step 2: Convert to fraction form
    283,431.12/391,134.96 = 156,106.72/x
  3. Step 3: Cross multiply
    283,431.12x = 391,134.96 × 156,106.72
  4. Step 4: Simplify right side
    283,431.12x = 61,058,795,682.93
  5. Step 5: Solve for x
    x = 61,058,795,682.93/283,431.12
  6. Step 6: Final answer
    x = 215,427.28

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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.