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Finding the Fourth Proportional to 285,417.75, 428,127.63 and 95,872.69

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Solution

The fourth proportional to 285,417.75, 428,127.63 and 95,872.69 is: 143,809.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,417.75 : 428,127.63 = 95,872.69 : x
  2. Step 2: Convert to fraction form
    285,417.75/428,127.63 = 95,872.69/x
  3. Step 3: Cross multiply
    285,417.75x = 428,127.63 × 95,872.69
  4. Step 4: Simplify right side
    285,417.75x = 41,045,747,551.42
  5. Step 5: Solve for x
    x = 41,045,747,551.42/285,417.75
  6. Step 6: Final answer
    x = 143,809.38

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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.