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Finding the Fourth Proportional to 354,903.55, 489,744.10 and 193,758.25

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Solution

The fourth proportional to 354,903.55, 489,744.10 and 193,758.25 is: 267,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,903.55 : 489,744.10 = 193,758.25 : x
  2. Step 2: Convert to fraction form
    354,903.55/489,744.10 = 193,758.25/x
  3. Step 3: Cross multiply
    354,903.55x = 489,744.10 × 193,758.25
  4. Step 4: Simplify right side
    354,903.55x = 94,891,960,532.39
  5. Step 5: Solve for x
    x = 94,891,960,532.39/354,903.55
  6. Step 6: Final answer
    x = 267,373.94

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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.