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Finding the Fourth Proportional to 354,952.62, 489,002.13 and 247,327.38

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Solution

The fourth proportional to 354,952.62, 489,002.13 and 247,327.38 is: 340,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,952.62 : 489,002.13 = 247,327.38 : x
  2. Step 2: Convert to fraction form
    354,952.62/489,002.13 = 247,327.38/x
  3. Step 3: Cross multiply
    354,952.62x = 489,002.13 × 247,327.38
  4. Step 4: Simplify right side
    354,952.62x = 120,943,615,627.32
  5. Step 5: Solve for x
    x = 120,943,615,627.32/354,952.62
  6. Step 6: Final answer
    x = 340,731.72

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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.