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Finding the Fourth Proportional to 212,015.64, 317,945.70 and 62,217.48

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Solution

The fourth proportional to 212,015.64, 317,945.70 and 62,217.48 is: 93,303.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,015.64 : 317,945.70 = 62,217.48 : x
  2. Step 2: Convert to fraction form
    212,015.64/317,945.70 = 62,217.48/x
  3. Step 3: Cross multiply
    212,015.64x = 317,945.70 × 62,217.48
  4. Step 4: Simplify right side
    212,015.64x = 19,781,780,230.84
  5. Step 5: Solve for x
    x = 19,781,780,230.84/212,015.64
  6. Step 6: Final answer
    x = 93,303.40

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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.