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Finding the Fourth Proportional to 285,570.64, 428,410.04 and 114,805.56

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Solution

The fourth proportional to 285,570.64, 428,410.04 and 114,805.56 is: 172,230.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,570.64 : 428,410.04 = 114,805.56 : x
  2. Step 2: Convert to fraction form
    285,570.64/428,410.04 = 114,805.56/x
  3. Step 3: Cross multiply
    285,570.64x = 428,410.04 × 114,805.56
  4. Step 4: Simplify right side
    285,570.64x = 49,183,854,551.82
  5. Step 5: Solve for x
    x = 49,183,854,551.82/285,570.64
  6. Step 6: Final answer
    x = 172,230.08

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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.