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Finding the Fourth Proportional to 617,146.70, 925,740.50 and 212,335.02

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Solution

The fourth proportional to 617,146.70, 925,740.50 and 212,335.02 is: 318,509.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,146.70 : 925,740.50 = 212,335.02 : x
  2. Step 2: Convert to fraction form
    617,146.70/925,740.50 = 212,335.02/x
  3. Step 3: Cross multiply
    617,146.70x = 925,740.50 × 212,335.02
  4. Step 4: Simplify right side
    617,146.70x = 196,567,126,520.64
  5. Step 5: Solve for x
    x = 196,567,126,520.64/617,146.70
  6. Step 6: Final answer
    x = 318,509.57

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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.