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Finding the Fourth Proportional to 268,390.42, 370,378.83 and 147,539.50

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Solution

The fourth proportional to 268,390.42, 370,378.83 and 147,539.50 is: 203,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,390.42 : 370,378.83 = 147,539.50 : x
  2. Step 2: Convert to fraction form
    268,390.42/370,378.83 = 147,539.50/x
  3. Step 3: Cross multiply
    268,390.42x = 370,378.83 × 147,539.50
  4. Step 4: Simplify right side
    268,390.42x = 54,645,507,388.79
  5. Step 5: Solve for x
    x = 54,645,507,388.79/268,390.42
  6. Step 6: Final answer
    x = 203,604.54

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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.