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Finding the Fourth Proportional to 285,355.22, 428,051.28 and 95,807.93

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Solution

The fourth proportional to 285,355.22, 428,051.28 and 95,807.93 is: 143,718.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,355.22 : 428,051.28 = 95,807.93 : x
  2. Step 2: Convert to fraction form
    285,355.22/428,051.28 = 95,807.93/x
  3. Step 3: Cross multiply
    285,355.22x = 428,051.28 × 95,807.93
  4. Step 4: Simplify right side
    285,355.22x = 41,010,707,070.65
  5. Step 5: Solve for x
    x = 41,010,707,070.65/285,355.22
  6. Step 6: Final answer
    x = 143,718.09

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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.