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Finding the Fourth Proportional to 316,178.04, 436,322.52 and 172,940.88

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Solution

The fourth proportional to 316,178.04, 436,322.52 and 172,940.88 is: 238,656.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,178.04 : 436,322.52 = 172,940.88 : x
  2. Step 2: Convert to fraction form
    316,178.04/436,322.52 = 172,940.88/x
  3. Step 3: Cross multiply
    316,178.04x = 436,322.52 × 172,940.88
  4. Step 4: Simplify right side
    316,178.04x = 75,458,000,572.62
  5. Step 5: Solve for x
    x = 75,458,000,572.62/316,178.04
  6. Step 6: Final answer
    x = 238,656.68

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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.