Home / 426,217.74-639,255.32-156,290.10

Finding the Fourth Proportional to 426,217.74, 639,255.32 and 156,290.10

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Solution

The fourth proportional to 426,217.74, 639,255.32 and 156,290.10 is: 234,409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,217.74 : 639,255.32 = 156,290.10 : x
  2. Step 2: Convert to fraction form
    426,217.74/639,255.32 = 156,290.10/x
  3. Step 3: Cross multiply
    426,217.74x = 639,255.32 × 156,290.10
  4. Step 4: Simplify right side
    426,217.74x = 99,909,277,888.33
  5. Step 5: Solve for x
    x = 99,909,277,888.33/426,217.74
  6. Step 6: Final answer
    x = 234,409.01

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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.