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Finding the Fourth Proportional to 465,399.60, 642,266.66 and 261,486.80

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Solution

The fourth proportional to 465,399.60, 642,266.66 and 261,486.80 is: 360,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,399.60 : 642,266.66 = 261,486.80 : x
  2. Step 2: Convert to fraction form
    465,399.60/642,266.66 = 261,486.80/x
  3. Step 3: Cross multiply
    465,399.60x = 642,266.66 × 261,486.80
  4. Step 4: Simplify right side
    465,399.60x = 167,944,253,670.09
  5. Step 5: Solve for x
    x = 167,944,253,670.09/465,399.60
  6. Step 6: Final answer
    x = 360,860.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.