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Finding the Fourth Proportional to 324,070.70, 485,875.65 and 124,313.90

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Solution

The fourth proportional to 324,070.70, 485,875.65 and 124,313.90 is: 186,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,070.70 : 485,875.65 = 124,313.90 : x
  2. Step 2: Convert to fraction form
    324,070.70/485,875.65 = 124,313.90/x
  3. Step 3: Cross multiply
    324,070.70x = 485,875.65 × 124,313.90
  4. Step 4: Simplify right side
    324,070.70x = 60,401,096,966.54
  5. Step 5: Solve for x
    x = 60,401,096,966.54/324,070.70
  6. Step 6: Final answer
    x = 186,382.47

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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.