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Finding the Fourth Proportional to 268,133.63, 370,019.21 and 147,272.11

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Solution

The fourth proportional to 268,133.63, 370,019.21 and 147,272.11 is: 203,232.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,133.63 : 370,019.21 = 147,272.11 : x
  2. Step 2: Convert to fraction form
    268,133.63/370,019.21 = 147,272.11/x
  3. Step 3: Cross multiply
    268,133.63x = 370,019.21 × 147,272.11
  4. Step 4: Simplify right side
    268,133.63x = 54,493,508,135.82
  5. Step 5: Solve for x
    x = 54,493,508,135.82/268,133.63
  6. Step 6: Final answer
    x = 203,232.65

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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.