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Finding the Fourth Proportional to 293,073.20, 439,609.80 and 290,999.60

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Solution

The fourth proportional to 293,073.20, 439,609.80 and 290,999.60 is: 436,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,073.20 : 439,609.80 = 290,999.60 : x
  2. Step 2: Convert to fraction form
    293,073.20/439,609.80 = 290,999.60/x
  3. Step 3: Cross multiply
    293,073.20x = 439,609.80 × 290,999.60
  4. Step 4: Simplify right side
    293,073.20x = 127,926,275,956.08
  5. Step 5: Solve for x
    x = 127,926,275,956.08/293,073.20
  6. Step 6: Final answer
    x = 436,499.40

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Similar ratio
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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.