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Finding the Fourth Proportional to 316,289.28, 436,490.11 and 173,049.31

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Solution

The fourth proportional to 316,289.28, 436,490.11 and 173,049.31 is: 238,814.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,289.28 : 436,490.11 = 173,049.31 : x
  2. Step 2: Convert to fraction form
    316,289.28/436,490.11 = 173,049.31/x
  3. Step 3: Cross multiply
    316,289.28x = 436,490.11 × 173,049.31
  4. Step 4: Simplify right side
    316,289.28x = 75,534,312,357.32
  5. Step 5: Solve for x
    x = 75,534,312,357.32/316,289.28
  6. Step 6: Final answer
    x = 238,814.01

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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.