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Finding the Fourth Proportional to 286,279.30, 395,028.25 and 158,930.29

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Solution

The fourth proportional to 286,279.30, 395,028.25 and 158,930.29 is: 219,303.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,279.30 : 395,028.25 = 158,930.29 : x
  2. Step 2: Convert to fraction form
    286,279.30/395,028.25 = 158,930.29/x
  3. Step 3: Cross multiply
    286,279.30x = 395,028.25 × 158,930.29
  4. Step 4: Simplify right side
    286,279.30x = 62,781,954,330.69
  5. Step 5: Solve for x
    x = 62,781,954,330.69/286,279.30
  6. Step 6: Final answer
    x = 219,303.16

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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.