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Finding the Fourth Proportional to 426,166.40, 639,249.60 and 177,334.40

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Solution

The fourth proportional to 426,166.40, 639,249.60 and 177,334.40 is: 266,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,166.40 : 639,249.60 = 177,334.40 : x
  2. Step 2: Convert to fraction form
    426,166.40/639,249.60 = 177,334.40/x
  3. Step 3: Cross multiply
    426,166.40x = 639,249.60 × 177,334.40
  4. Step 4: Simplify right side
    426,166.40x = 113,360,944,266.24
  5. Step 5: Solve for x
    x = 113,360,944,266.24/426,166.40
  6. Step 6: Final answer
    x = 266,001.60

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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.