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Finding the Fourth Proportional to 268,431.67, 370,430.79 and 147,571.87

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Solution

The fourth proportional to 268,431.67, 370,430.79 and 147,571.87 is: 203,646.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,431.67 : 370,430.79 = 147,571.87 : x
  2. Step 2: Convert to fraction form
    268,431.67/370,430.79 = 147,571.87/x
  3. Step 3: Cross multiply
    268,431.67x = 370,430.79 × 147,571.87
  4. Step 4: Simplify right side
    268,431.67x = 54,665,164,385.88
  5. Step 5: Solve for x
    x = 54,665,164,385.88/268,431.67
  6. Step 6: Final answer
    x = 203,646.48

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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.