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Finding the Fourth Proportional to 229,940.51, 317,317.65 and 129,338.51

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Solution

The fourth proportional to 229,940.51, 317,317.65 and 129,338.51 is: 178,487.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,940.51 : 317,317.65 = 129,338.51 : x
  2. Step 2: Convert to fraction form
    229,940.51/317,317.65 = 129,338.51/x
  3. Step 3: Cross multiply
    229,940.51x = 317,317.65 × 129,338.51
  4. Step 4: Simplify right side
    229,940.51x = 41,041,392,047.70
  5. Step 5: Solve for x
    x = 41,041,392,047.70/229,940.51
  6. Step 6: Final answer
    x = 178,487.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.