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Finding the Fourth Proportional to 438,760.80, 605,458.80 and 247,762.80

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Solution

The fourth proportional to 438,760.80, 605,458.80 and 247,762.80 is: 341,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,760.80 : 605,458.80 = 247,762.80 : x
  2. Step 2: Convert to fraction form
    438,760.80/605,458.80 = 247,762.80/x
  3. Step 3: Cross multiply
    438,760.80x = 605,458.80 × 247,762.80
  4. Step 4: Simplify right side
    438,760.80x = 150,010,167,572.64
  5. Step 5: Solve for x
    x = 150,010,167,572.64/438,760.80
  6. Step 6: Final answer
    x = 341,895.10

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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.