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Finding the Fourth Proportional to 268,669, 370,763.21 and 147,807.69

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Solution

The fourth proportional to 268,669, 370,763.21 and 147,807.69 is: 203,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,669 : 370,763.21 = 147,807.69 : x
  2. Step 2: Convert to fraction form
    268,669/370,763.21 = 147,807.69/x
  3. Step 3: Cross multiply
    268,669x = 370,763.21 × 147,807.69
  4. Step 4: Simplify right side
    268,669x = 54,801,653,607.08
  5. Step 5: Solve for x
    x = 54,801,653,607.08/268,669
  6. Step 6: Final answer
    x = 203,974.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.