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Finding the Fourth Proportional to 426,841.48, 640,331.76 and 199,364.62

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Solution

The fourth proportional to 426,841.48, 640,331.76 and 199,364.62 is: 299,079.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,841.48 : 640,331.76 = 199,364.62 : x
  2. Step 2: Convert to fraction form
    426,841.48/640,331.76 = 199,364.62/x
  3. Step 3: Cross multiply
    426,841.48x = 640,331.76 × 199,364.62
  4. Step 4: Simplify right side
    426,841.48x = 127,659,498,006.33
  5. Step 5: Solve for x
    x = 127,659,498,006.33/426,841.48
  6. Step 6: Final answer
    x = 299,079.41

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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.