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Finding the Fourth Proportional to 243,165.86, 334,826.03 and 220,356.45

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Solution

The fourth proportional to 243,165.86, 334,826.03 and 220,356.45 is: 303,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,165.86 : 334,826.03 = 220,356.45 : x
  2. Step 2: Convert to fraction form
    243,165.86/334,826.03 = 220,356.45/x
  3. Step 3: Cross multiply
    243,165.86x = 334,826.03 × 220,356.45
  4. Step 4: Simplify right side
    243,165.86x = 73,781,075,889.28
  5. Step 5: Solve for x
    x = 73,781,075,889.28/243,165.86
  6. Step 6: Final answer
    x = 303,418.73

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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.