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Finding the Fourth Proportional to 317,446.30, 438,054.30 and 174,215.56

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Solution

The fourth proportional to 317,446.30, 438,054.30 and 174,215.56 is: 240,405.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,446.30 : 438,054.30 = 174,215.56 : x
  2. Step 2: Convert to fraction form
    317,446.30/438,054.30 = 174,215.56/x
  3. Step 3: Cross multiply
    317,446.30x = 438,054.30 × 174,215.56
  4. Step 4: Simplify right side
    317,446.30x = 76,315,875,184.91
  5. Step 5: Solve for x
    x = 76,315,875,184.91/317,446.30
  6. Step 6: Final answer
    x = 240,405.62

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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.