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Finding the Fourth Proportional to 317,442.29, 438,048.78 and 174,211.56

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Solution

The fourth proportional to 317,442.29, 438,048.78 and 174,211.56 is: 240,400.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,442.29 : 438,048.78 = 174,211.56 : x
  2. Step 2: Convert to fraction form
    317,442.29/438,048.78 = 174,211.56/x
  3. Step 3: Cross multiply
    317,442.29x = 438,048.78 × 174,211.56
  4. Step 4: Simplify right side
    317,442.29x = 76,313,161,319.90
  5. Step 5: Solve for x
    x = 76,313,161,319.90/317,442.29
  6. Step 6: Final answer
    x = 240,400.11

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1.5x scale

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.