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Finding the Fourth Proportional to 305,843.80, 458,765.70 and 199,555.60

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Solution

The fourth proportional to 305,843.80, 458,765.70 and 199,555.60 is: 299,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,843.80 : 458,765.70 = 199,555.60 : x
  2. Step 2: Convert to fraction form
    305,843.80/458,765.70 = 199,555.60/x
  3. Step 3: Cross multiply
    305,843.80x = 458,765.70 × 199,555.60
  4. Step 4: Simplify right side
    305,843.80x = 91,549,264,522.92
  5. Step 5: Solve for x
    x = 91,549,264,522.92/305,843.80
  6. Step 6: Final answer
    x = 299,333.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.