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Finding the Fourth Proportional to 317,528.78, 438,194.68 and 174,301.88

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Solution

The fourth proportional to 317,528.78, 438,194.68 and 174,301.88 is: 240,539.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,528.78 : 438,194.68 = 174,301.88 : x
  2. Step 2: Convert to fraction form
    317,528.78/438,194.68 = 174,301.88/x
  3. Step 3: Cross multiply
    317,528.78x = 438,194.68 × 174,301.88
  4. Step 4: Simplify right side
    317,528.78x = 76,378,153,903.27
  5. Step 5: Solve for x
    x = 76,378,153,903.27/317,528.78
  6. Step 6: Final answer
    x = 240,539.31

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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.