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Finding the Fourth Proportional to 323,734.90, 485,429.55 and 136,534.90

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Solution

The fourth proportional to 323,734.90, 485,429.55 and 136,534.90 is: 204,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,734.90 : 485,429.55 = 136,534.90 : x
  2. Step 2: Convert to fraction form
    323,734.90/485,429.55 = 136,534.90/x
  3. Step 3: Cross multiply
    323,734.90x = 485,429.55 × 136,534.90
  4. Step 4: Simplify right side
    323,734.90x = 66,278,075,066.30
  5. Step 5: Solve for x
    x = 66,278,075,066.30/323,734.90
  6. Step 6: Final answer
    x = 204,729.47

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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.