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Finding the Fourth Proportional to 345,808.92, 477,218.40 and 192,856.80

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Solution

The fourth proportional to 345,808.92, 477,218.40 and 192,856.80 is: 266,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,808.92 : 477,218.40 = 192,856.80 : x
  2. Step 2: Convert to fraction form
    345,808.92/477,218.40 = 192,856.80/x
  3. Step 3: Cross multiply
    345,808.92x = 477,218.40 × 192,856.80
  4. Step 4: Simplify right side
    345,808.92x = 92,034,813,525.12
  5. Step 5: Solve for x
    x = 92,034,813,525.12/345,808.92
  6. Step 6: Final answer
    x = 266,143.55

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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.