Home / 426,405.88-639,394.74-141,996.25

Finding the Fourth Proportional to 426,405.88, 639,394.74 and 141,996.25

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Solution

The fourth proportional to 426,405.88, 639,394.74 and 141,996.25 is: 212,923.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,405.88 : 639,394.74 = 141,996.25 : x
  2. Step 2: Convert to fraction form
    426,405.88/639,394.74 = 141,996.25/x
  3. Step 3: Cross multiply
    426,405.88x = 639,394.74 × 141,996.25
  4. Step 4: Simplify right side
    426,405.88x = 90,791,655,349.73
  5. Step 5: Solve for x
    x = 90,791,655,349.73/426,405.88
  6. Step 6: Final answer
    x = 212,923.08

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1.5x scale

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.