Home / 438,727.46-605,447.89-257,442.40

Finding the Fourth Proportional to 438,727.46, 605,447.89 and 257,442.40

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Solution

The fourth proportional to 438,727.46, 605,447.89 and 257,442.40 is: 355,272.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,727.46 : 605,447.89 = 257,442.40 : x
  2. Step 2: Convert to fraction form
    438,727.46/605,447.89 = 257,442.40/x
  3. Step 3: Cross multiply
    438,727.46x = 605,447.89 × 257,442.40
  4. Step 4: Simplify right side
    438,727.46x = 155,867,957,989.74
  5. Step 5: Solve for x
    x = 155,867,957,989.74/438,727.46
  6. Step 6: Final answer
    x = 355,272.86

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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.