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Finding the Fourth Proportional to 617,166, 925,509.70 and 212,281.22

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Solution

The fourth proportional to 617,166, 925,509.70 and 212,281.22 is: 318,339.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,166 : 925,509.70 = 212,281.22 : x
  2. Step 2: Convert to fraction form
    617,166/925,509.70 = 212,281.22/x
  3. Step 3: Cross multiply
    617,166x = 925,509.70 × 212,281.22
  4. Step 4: Simplify right side
    617,166x = 196,468,328,237.83
  5. Step 5: Solve for x
    x = 196,468,328,237.83/617,166
  6. Step 6: Final answer
    x = 318,339.52

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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.