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Finding the Fourth Proportional to 317,401.68, 438,012.68 and 179,586.64

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Solution

The fourth proportional to 317,401.68, 438,012.68 and 179,586.64 is: 247,828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,401.68 : 438,012.68 = 179,586.64 : x
  2. Step 2: Convert to fraction form
    317,401.68/438,012.68 = 179,586.64/x
  3. Step 3: Cross multiply
    317,401.68x = 438,012.68 × 179,586.64
  4. Step 4: Simplify right side
    317,401.68x = 78,661,225,478.60
  5. Step 5: Solve for x
    x = 78,661,225,478.60/317,401.68
  6. Step 6: Final answer
    x = 247,828.64

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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.