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Finding the Fourth Proportional to 408,701.40, 613,416.60 and 240,010.80

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Solution

The fourth proportional to 408,701.40, 613,416.60 and 240,010.80 is: 360,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,701.40 : 613,416.60 = 240,010.80 : x
  2. Step 2: Convert to fraction form
    408,701.40/613,416.60 = 240,010.80/x
  3. Step 3: Cross multiply
    408,701.40x = 613,416.60 × 240,010.80
  4. Step 4: Simplify right side
    408,701.40x = 147,226,608,899.28
  5. Step 5: Solve for x
    x = 147,226,608,899.28/408,701.40
  6. Step 6: Final answer
    x = 360,230.25

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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.