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Finding the Fourth Proportional to 323,700.09, 485,550.13 and 136,713.21

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Solution

The fourth proportional to 323,700.09, 485,550.13 and 136,713.21 is: 205,069.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,700.09 : 485,550.13 = 136,713.21 : x
  2. Step 2: Convert to fraction form
    323,700.09/485,550.13 = 136,713.21/x
  3. Step 3: Cross multiply
    323,700.09x = 485,550.13 × 136,713.21
  4. Step 4: Simplify right side
    323,700.09x = 66,381,116,888.22
  5. Step 5: Solve for x
    x = 66,381,116,888.22/323,700.09
  6. Step 6: Final answer
    x = 205,069.81

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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.