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Finding the Fourth Proportional to 425,986.80, 587,818.67 and 251,529.81

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Solution

The fourth proportional to 425,986.80, 587,818.67 and 251,529.81 is: 347,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,986.80 : 587,818.67 = 251,529.81 : x
  2. Step 2: Convert to fraction form
    425,986.80/587,818.67 = 251,529.81/x
  3. Step 3: Cross multiply
    425,986.80x = 587,818.67 × 251,529.81
  4. Step 4: Simplify right side
    425,986.80x = 147,853,916,332.44
  5. Step 5: Solve for x
    x = 147,853,916,332.44/425,986.80
  6. Step 6: Final answer
    x = 347,085.68

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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.