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Finding the Fourth Proportional to 426,549.20, 640,044.60 and 174,014.80

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Solution

The fourth proportional to 426,549.20, 640,044.60 and 174,014.80 is: 261,112.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,549.20 : 640,044.60 = 174,014.80 : x
  2. Step 2: Convert to fraction form
    426,549.20/640,044.60 = 174,014.80/x
  3. Step 3: Cross multiply
    426,549.20x = 640,044.60 × 174,014.80
  4. Step 4: Simplify right side
    426,549.20x = 111,377,233,060.08
  5. Step 5: Solve for x
    x = 111,377,233,060.08/426,549.20
  6. Step 6: Final answer
    x = 261,112.28

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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.