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Finding the Fourth Proportional to 293,079.80, 439,619.70 and 202,878.20

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Solution

The fourth proportional to 293,079.80, 439,619.70 and 202,878.20 is: 304,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,079.80 : 439,619.70 = 202,878.20 : x
  2. Step 2: Convert to fraction form
    293,079.80/439,619.70 = 202,878.20/x
  3. Step 3: Cross multiply
    293,079.80x = 439,619.70 × 202,878.20
  4. Step 4: Simplify right side
    293,079.80x = 89,189,253,420.54
  5. Step 5: Solve for x
    x = 89,189,253,420.54/293,079.80
  6. Step 6: Final answer
    x = 304,317.30

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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.