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Finding the Fourth Proportional to 262,644.90, 393,967.35 and 122,417.70

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Solution

The fourth proportional to 262,644.90, 393,967.35 and 122,417.70 is: 183,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,644.90 : 393,967.35 = 122,417.70 : x
  2. Step 2: Convert to fraction form
    262,644.90/393,967.35 = 122,417.70/x
  3. Step 3: Cross multiply
    262,644.90x = 393,967.35 × 122,417.70
  4. Step 4: Simplify right side
    262,644.90x = 48,228,576,862.10
  5. Step 5: Solve for x
    x = 48,228,576,862.10/262,644.90
  6. Step 6: Final answer
    x = 183,626.55

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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.