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Finding the Fourth Proportional to 285,790.84, 428,681.80 and 69,652.04

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Solution

The fourth proportional to 285,790.84, 428,681.80 and 69,652.04 is: 104,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,790.84 : 428,681.80 = 69,652.04 : x
  2. Step 2: Convert to fraction form
    285,790.84/428,681.80 = 69,652.04/x
  3. Step 3: Cross multiply
    285,790.84x = 428,681.80 × 69,652.04
  4. Step 4: Simplify right side
    285,790.84x = 29,858,561,880.87
  5. Step 5: Solve for x
    x = 29,858,561,880.87/285,790.84
  6. Step 6: Final answer
    x = 104,476.97

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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.