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Finding the Fourth Proportional to 290,373.59, 399,788.65 and 247,761.11

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Solution

The fourth proportional to 290,373.59, 399,788.65 and 247,761.11 is: 341,119.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,373.59 : 399,788.65 = 247,761.11 : x
  2. Step 2: Convert to fraction form
    290,373.59/399,788.65 = 247,761.11/x
  3. Step 3: Cross multiply
    290,373.59x = 399,788.65 × 247,761.11
  4. Step 4: Simplify right side
    290,373.59x = 99,052,079,689.40
  5. Step 5: Solve for x
    x = 99,052,079,689.40/290,373.59
  6. Step 6: Final answer
    x = 341,119.45

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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.