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Finding the Fourth Proportional to 312,400.89, 468,504.45 and 112,695.33

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Solution

The fourth proportional to 312,400.89, 468,504.45 and 112,695.33 is: 169,008.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,400.89 : 468,504.45 = 112,695.33 : x
  2. Step 2: Convert to fraction form
    312,400.89/468,504.45 = 112,695.33/x
  3. Step 3: Cross multiply
    312,400.89x = 468,504.45 × 112,695.33
  4. Step 4: Simplify right side
    312,400.89x = 52,798,263,599.22
  5. Step 5: Solve for x
    x = 52,798,263,599.22/312,400.89
  6. Step 6: Final answer
    x = 169,008.04

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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.