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Finding the Fourth Proportional to 323,722.80, 485,566.29 and 99,083.07

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Solution

The fourth proportional to 323,722.80, 485,566.29 and 99,083.07 is: 148,619.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,722.80 : 485,566.29 = 99,083.07 : x
  2. Step 2: Convert to fraction form
    323,722.80/485,566.29 = 99,083.07/x
  3. Step 3: Cross multiply
    323,722.80x = 485,566.29 × 99,083.07
  4. Step 4: Simplify right side
    323,722.80x = 48,111,398,701.71
  5. Step 5: Solve for x
    x = 48,111,398,701.71/323,722.80
  6. Step 6: Final answer
    x = 148,619.12

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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.