Home / 426,128.09-639,026.01-159,743.25

Finding the Fourth Proportional to 426,128.09, 639,026.01 and 159,743.25

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Solution

The fourth proportional to 426,128.09, 639,026.01 and 159,743.25 is: 239,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,128.09 : 639,026.01 = 159,743.25 : x
  2. Step 2: Convert to fraction form
    426,128.09/639,026.01 = 159,743.25/x
  3. Step 3: Cross multiply
    426,128.09x = 639,026.01 × 159,743.25
  4. Step 4: Simplify right side
    426,128.09x = 102,080,091,671.93
  5. Step 5: Solve for x
    x = 102,080,091,671.93/426,128.09
  6. Step 6: Final answer
    x = 239,552.60

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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.