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Finding the Fourth Proportional to 356,422.16, 491,862.57 and 195,283.31

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Solution

The fourth proportional to 356,422.16, 491,862.57 and 195,283.31 is: 269,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,422.16 : 491,862.57 = 195,283.31 : x
  2. Step 2: Convert to fraction form
    356,422.16/491,862.57 = 195,283.31/x
  3. Step 3: Cross multiply
    356,422.16x = 491,862.57 × 195,283.31
  4. Step 4: Simplify right side
    356,422.16x = 96,052,550,734.71
  5. Step 5: Solve for x
    x = 96,052,550,734.71/356,422.16
  6. Step 6: Final answer
    x = 269,490.96

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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.