Home / 426,218.24-639,256.07-156,290.60

Finding the Fourth Proportional to 426,218.24, 639,256.07 and 156,290.60

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Solution

The fourth proportional to 426,218.24, 639,256.07 and 156,290.60 is: 234,409.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,218.24 : 639,256.07 = 156,290.60 : x
  2. Step 2: Convert to fraction form
    426,218.24/639,256.07 = 156,290.60/x
  3. Step 3: Cross multiply
    426,218.24x = 639,256.07 × 156,290.60
  4. Step 4: Simplify right side
    426,218.24x = 99,909,711,537.66
  5. Step 5: Solve for x
    x = 99,909,711,537.66/426,218.24
  6. Step 6: Final answer
    x = 234,409.75

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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.