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Finding the Fourth Proportional to 286,279.80, 395,028.95 and 158,930.79

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Solution

The fourth proportional to 286,279.80, 395,028.95 and 158,930.79 is: 219,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,279.80 : 395,028.95 = 158,930.79 : x
  2. Step 2: Convert to fraction form
    286,279.80/395,028.95 = 158,930.79/x
  3. Step 3: Cross multiply
    286,279.80x = 395,028.95 × 158,930.79
  4. Step 4: Simplify right side
    286,279.80x = 62,782,262,301.72
  5. Step 5: Solve for x
    x = 62,782,262,301.72/286,279.80
  6. Step 6: Final answer
    x = 219,303.85

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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.