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Finding the Fourth Proportional to 317,628.96, 438,339.24 and 174,399.96

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Solution

The fourth proportional to 317,628.96, 438,339.24 and 174,399.96 is: 240,678.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,628.96 : 438,339.24 = 174,399.96 : x
  2. Step 2: Convert to fraction form
    317,628.96/438,339.24 = 174,399.96/x
  3. Step 3: Cross multiply
    317,628.96x = 438,339.24 × 174,399.96
  4. Step 4: Simplify right side
    317,628.96x = 76,446,345,922.43
  5. Step 5: Solve for x
    x = 76,446,345,922.43/317,628.96
  6. Step 6: Final answer
    x = 240,678.14

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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.