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Finding the Fourth Proportional to 617,148.70, 925,743.50 and 212,337.02

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Solution

The fourth proportional to 617,148.70, 925,743.50 and 212,337.02 is: 318,512.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,148.70 : 925,743.50 = 212,337.02 : x
  2. Step 2: Convert to fraction form
    617,148.70/925,743.50 = 212,337.02/x
  3. Step 3: Cross multiply
    617,148.70x = 925,743.50 × 212,337.02
  4. Step 4: Simplify right side
    617,148.70x = 196,569,616,074.37
  5. Step 5: Solve for x
    x = 196,569,616,074.37/617,148.70
  6. Step 6: Final answer
    x = 318,512.57

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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.