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Finding the Fourth Proportional to 356,411.12, 491,862.12 and 195,280.16

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Solution

The fourth proportional to 356,411.12, 491,862.12 and 195,280.16 is: 269,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,411.12 : 491,862.12 = 195,280.16 : x
  2. Step 2: Convert to fraction form
    356,411.12/491,862.12 = 195,280.16/x
  3. Step 3: Cross multiply
    356,411.12x = 491,862.12 × 195,280.16
  4. Step 4: Simplify right side
    356,411.12x = 96,050,913,491.54
  5. Step 5: Solve for x
    x = 96,050,913,491.54/356,411.12
  6. Step 6: Final answer
    x = 269,494.72

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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.