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Finding the Fourth Proportional to 425,307.78, 587,169.09 and 282,261.78

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Solution

The fourth proportional to 425,307.78, 587,169.09 and 282,261.78 is: 389,683.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,307.78 : 587,169.09 = 282,261.78 : x
  2. Step 2: Convert to fraction form
    425,307.78/587,169.09 = 282,261.78/x
  3. Step 3: Cross multiply
    425,307.78x = 587,169.09 × 282,261.78
  4. Step 4: Simplify right side
    425,307.78x = 165,735,392,504.38
  5. Step 5: Solve for x
    x = 165,735,392,504.38/425,307.78
  6. Step 6: Final answer
    x = 389,683.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.