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Finding the Fourth Proportional to 317,809.62, 438,565.48 and 174,561.12

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Solution

The fourth proportional to 317,809.62, 438,565.48 and 174,561.12 is: 240,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,809.62 : 438,565.48 = 174,561.12 : x
  2. Step 2: Convert to fraction form
    317,809.62/438,565.48 = 174,561.12/x
  3. Step 3: Cross multiply
    317,809.62x = 438,565.48 × 174,561.12
  4. Step 4: Simplify right side
    317,809.62x = 76,556,481,382.14
  5. Step 5: Solve for x
    x = 76,556,481,382.14/317,809.62
  6. Step 6: Final answer
    x = 240,887.87

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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.