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Finding the Fourth Proportional to 316,532.40, 436,819.92 and 173,290.08

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Solution

The fourth proportional to 316,532.40, 436,819.92 and 173,290.08 is: 239,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,532.40 : 436,819.92 = 173,290.08 : x
  2. Step 2: Convert to fraction form
    316,532.40/436,819.92 = 173,290.08/x
  3. Step 3: Cross multiply
    316,532.40x = 436,819.92 × 173,290.08
  4. Step 4: Simplify right side
    316,532.40x = 75,696,558,882.39
  5. Step 5: Solve for x
    x = 75,696,558,882.39/316,532.40
  6. Step 6: Final answer
    x = 239,143.16

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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.