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Finding the Fourth Proportional to 268,488.80, 370,505.12 and 147,629.28

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Solution

The fourth proportional to 268,488.80, 370,505.12 and 147,629.28 is: 203,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,488.80 : 370,505.12 = 147,629.28 : x
  2. Step 2: Convert to fraction form
    268,488.80/370,505.12 = 147,629.28/x
  3. Step 3: Cross multiply
    268,488.80x = 370,505.12 × 147,629.28
  4. Step 4: Simplify right side
    268,488.80x = 54,697,404,101.91
  5. Step 5: Solve for x
    x = 54,697,404,101.91/268,488.80
  6. Step 6: Final answer
    x = 203,723.22

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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.