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Finding the Fourth Proportional to 305,956.28, 458,714.59 and 143,758.87

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Solution

The fourth proportional to 305,956.28, 458,714.59 and 143,758.87 is: 215,535.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,956.28 : 458,714.59 = 143,758.87 : x
  2. Step 2: Convert to fraction form
    305,956.28/458,714.59 = 143,758.87/x
  3. Step 3: Cross multiply
    305,956.28x = 458,714.59 × 143,758.87
  4. Step 4: Simplify right side
    305,956.28x = 65,944,290,413.37
  5. Step 5: Solve for x
    x = 65,944,290,413.37/305,956.28
  6. Step 6: Final answer
    x = 215,535.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.