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Finding the Fourth Proportional to 268,478.76, 370,491.20 and 147,619.20

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Solution

The fourth proportional to 268,478.76, 370,491.20 and 147,619.20 is: 203,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,478.76 : 370,491.20 = 147,619.20 : x
  2. Step 2: Convert to fraction form
    268,478.76/370,491.20 = 147,619.20/x
  3. Step 3: Cross multiply
    268,478.76x = 370,491.20 × 147,619.20
  4. Step 4: Simplify right side
    268,478.76x = 54,691,614,551.04
  5. Step 5: Solve for x
    x = 54,691,614,551.04/268,478.76
  6. Step 6: Final answer
    x = 203,709.28

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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.