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Finding the Fourth Proportional to 519,540.48, 716,958.84 and 290,101.32

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Solution

The fourth proportional to 519,540.48, 716,958.84 and 290,101.32 is: 400,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,540.48 : 716,958.84 = 290,101.32 : x
  2. Step 2: Convert to fraction form
    519,540.48/716,958.84 = 290,101.32/x
  3. Step 3: Cross multiply
    519,540.48x = 716,958.84 × 290,101.32
  4. Step 4: Simplify right side
    519,540.48x = 207,990,705,869.67
  5. Step 5: Solve for x
    x = 207,990,705,869.67/519,540.48
  6. Step 6: Final answer
    x = 400,335.90

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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.