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Finding the Fourth Proportional to 250,255.72, 375,224.48 and 212,318.06

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Solution

The fourth proportional to 250,255.72, 375,224.48 and 212,318.06 is: 318,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,255.72 : 375,224.48 = 212,318.06 : x
  2. Step 2: Convert to fraction form
    250,255.72/375,224.48 = 212,318.06/x
  3. Step 3: Cross multiply
    250,255.72x = 375,224.48 × 212,318.06
  4. Step 4: Simplify right side
    250,255.72x = 79,666,934,821.52
  5. Step 5: Solve for x
    x = 79,666,934,821.52/250,255.72
  6. Step 6: Final answer
    x = 318,342.12

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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.