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Finding the Fourth Proportional to 425,878.94, 587,527.34 and 280,496.90

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Solution

The fourth proportional to 425,878.94, 587,527.34 and 280,496.90 is: 386,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,878.94 : 587,527.34 = 280,496.90 : x
  2. Step 2: Convert to fraction form
    425,878.94/587,527.34 = 280,496.90/x
  3. Step 3: Cross multiply
    425,878.94x = 587,527.34 × 280,496.90
  4. Step 4: Simplify right side
    425,878.94x = 164,799,597,535.25
  5. Step 5: Solve for x
    x = 164,799,597,535.25/425,878.94
  6. Step 6: Final answer
    x = 386,963.48

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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.