Home / 426,218.64-639,131.13-159,788.58

Finding the Fourth Proportional to 426,218.64, 639,131.13 and 159,788.58

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Solution

The fourth proportional to 426,218.64, 639,131.13 and 159,788.58 is: 239,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,218.64 : 639,131.13 = 159,788.58 : x
  2. Step 2: Convert to fraction form
    426,218.64/639,131.13 = 159,788.58/x
  3. Step 3: Cross multiply
    426,218.64x = 639,131.13 × 159,788.58
  4. Step 4: Simplify right side
    426,218.64x = 102,125,855,696.50
  5. Step 5: Solve for x
    x = 102,125,855,696.50/426,218.64
  6. Step 6: Final answer
    x = 239,609.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.