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Finding the Fourth Proportional to 212,270.52, 318,394.26 and 64,515

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Solution

The fourth proportional to 212,270.52, 318,394.26 and 64,515 is: 96,769.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,270.52 : 318,394.26 = 64,515 : x
  2. Step 2: Convert to fraction form
    212,270.52/318,394.26 = 64,515/x
  3. Step 3: Cross multiply
    212,270.52x = 318,394.26 × 64,515
  4. Step 4: Simplify right side
    212,270.52x = 20,541,205,683.90
  5. Step 5: Solve for x
    x = 20,541,205,683.90/212,270.52
  6. Step 6: Final answer
    x = 96,769.00

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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.