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Finding the Fourth Proportional to 356,422.66, 491,863.26 and 195,283.81

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Solution

The fourth proportional to 356,422.66, 491,863.26 and 195,283.81 is: 269,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,422.66 : 491,863.26 = 195,283.81 : x
  2. Step 2: Convert to fraction form
    356,422.66/491,863.26 = 195,283.81/x
  3. Step 3: Cross multiply
    356,422.66x = 491,863.26 × 195,283.81
  4. Step 4: Simplify right side
    356,422.66x = 96,052,931,411.82
  5. Step 5: Solve for x
    x = 96,052,931,411.82/356,422.66
  6. Step 6: Final answer
    x = 269,491.65

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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.