Home / 438,567.20-605,227.78-257,282.21

Finding the Fourth Proportional to 438,567.20, 605,227.78 and 257,282.21

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Solution

The fourth proportional to 438,567.20, 605,227.78 and 257,282.21 is: 355,052.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,567.20 : 605,227.78 = 257,282.21 : x
  2. Step 2: Convert to fraction form
    438,567.20/605,227.78 = 257,282.21/x
  3. Step 3: Cross multiply
    438,567.20x = 605,227.78 × 257,282.21
  4. Step 4: Simplify right side
    438,567.20x = 155,714,340,791.79
  5. Step 5: Solve for x
    x = 155,714,340,791.79/438,567.20
  6. Step 6: Final answer
    x = 355,052.41

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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.