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Finding the Fourth Proportional to 285,704.94, 428,553.04 and 69,565.68

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Solution

The fourth proportional to 285,704.94, 428,553.04 and 69,565.68 is: 104,347.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,704.94 : 428,553.04 = 69,565.68 : x
  2. Step 2: Convert to fraction form
    285,704.94/428,553.04 = 69,565.68/x
  3. Step 3: Cross multiply
    285,704.94x = 428,553.04 × 69,565.68
  4. Step 4: Simplify right side
    285,704.94x = 29,812,583,643.67
  5. Step 5: Solve for x
    x = 29,812,583,643.67/285,704.94
  6. Step 6: Final answer
    x = 104,347.46

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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.