Home / 283,823.12-391,679.04-156,503.28

Finding the Fourth Proportional to 283,823.12, 391,679.04 and 156,503.28

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Solution

The fourth proportional to 283,823.12, 391,679.04 and 156,503.28 is: 215,976.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,823.12 : 391,679.04 = 156,503.28 : x
  2. Step 2: Convert to fraction form
    283,823.12/391,679.04 = 156,503.28/x
  3. Step 3: Cross multiply
    283,823.12x = 391,679.04 × 156,503.28
  4. Step 4: Simplify right side
    283,823.12x = 61,299,054,467.25
  5. Step 5: Solve for x
    x = 61,299,054,467.25/283,823.12
  6. Step 6: Final answer
    x = 215,976.25

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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.