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Finding the Fourth Proportional to 354,882.36, 489,728.70 and 193,742.04

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Solution

The fourth proportional to 354,882.36, 489,728.70 and 193,742.04 is: 267,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,882.36 : 489,728.70 = 193,742.04 : x
  2. Step 2: Convert to fraction form
    354,882.36/489,728.70 = 193,742.04/x
  3. Step 3: Cross multiply
    354,882.36x = 489,728.70 × 193,742.04
  4. Step 4: Simplify right side
    354,882.36x = 94,881,037,384.55
  5. Step 5: Solve for x
    x = 94,881,037,384.55/354,882.36
  6. Step 6: Final answer
    x = 267,359.13

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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.