Home / 283,450.87-391,157.51-156,138.31

Finding the Fourth Proportional to 283,450.87, 391,157.51 and 156,138.31

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Solution

The fourth proportional to 283,450.87, 391,157.51 and 156,138.31 is: 215,468.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,450.87 : 391,157.51 = 156,138.31 : x
  2. Step 2: Convert to fraction form
    283,450.87/391,157.51 = 156,138.31/x
  3. Step 3: Cross multiply
    283,450.87x = 391,157.51 × 156,138.31
  4. Step 4: Simplify right side
    283,450.87x = 61,074,671,774.52
  5. Step 5: Solve for x
    x = 61,074,671,774.52/283,450.87
  6. Step 6: Final answer
    x = 215,468.28

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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.