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Finding the Fourth Proportional to 400,422.90, 552,392.16 and 247,405.80

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Solution

The fourth proportional to 400,422.90, 552,392.16 and 247,405.80 is: 341,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,422.90 : 552,392.16 = 247,405.80 : x
  2. Step 2: Convert to fraction form
    400,422.90/552,392.16 = 247,405.80/x
  3. Step 3: Cross multiply
    400,422.90x = 552,392.16 × 247,405.80
  4. Step 4: Simplify right side
    400,422.90x = 136,665,024,258.53
  5. Step 5: Solve for x
    x = 136,665,024,258.53/400,422.90
  6. Step 6: Final answer
    x = 341,301.72

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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.