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Finding the Fourth Proportional to 317,204.46, 475,879.59 and 139,725.16

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Solution

The fourth proportional to 317,204.46, 475,879.59 and 139,725.16 is: 209,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,204.46 : 475,879.59 = 139,725.16 : x
  2. Step 2: Convert to fraction form
    317,204.46/475,879.59 = 139,725.16/x
  3. Step 3: Cross multiply
    317,204.46x = 475,879.59 × 139,725.16
  4. Step 4: Simplify right side
    317,204.46x = 66,492,350,663.79
  5. Step 5: Solve for x
    x = 66,492,350,663.79/317,204.46
  6. Step 6: Final answer
    x = 209,619.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.