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Finding the Fourth Proportional to 278,667.51, 384,563.42 and 151,344.01

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Solution

The fourth proportional to 278,667.51, 384,563.42 and 151,344.01 is: 208,855.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,667.51 : 384,563.42 = 151,344.01 : x
  2. Step 2: Convert to fraction form
    278,667.51/384,563.42 = 151,344.01/x
  3. Step 3: Cross multiply
    278,667.51x = 384,563.42 × 151,344.01
  4. Step 4: Simplify right side
    278,667.51x = 58,201,370,082.11
  5. Step 5: Solve for x
    x = 58,201,370,082.11/278,667.51
  6. Step 6: Final answer
    x = 208,855.96

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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.