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Finding the Fourth Proportional to 240,396.80, 360,657.60 and 71,920.64

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Solution

The fourth proportional to 240,396.80, 360,657.60 and 71,920.64 is: 107,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,396.80 : 360,657.60 = 71,920.64 : x
  2. Step 2: Convert to fraction form
    240,396.80/360,657.60 = 71,920.64/x
  3. Step 3: Cross multiply
    240,396.80x = 360,657.60 × 71,920.64
  4. Step 4: Simplify right side
    240,396.80x = 25,938,725,412.86
  5. Step 5: Solve for x
    x = 25,938,725,412.86/240,396.80
  6. Step 6: Final answer
    x = 107,899.63

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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.