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Finding the Fourth Proportional to 487,853.56, 731,758.38 and 203,426.92

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Solution

The fourth proportional to 487,853.56, 731,758.38 and 203,426.92 is: 305,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,853.56 : 731,758.38 = 203,426.92 : x
  2. Step 2: Convert to fraction form
    487,853.56/731,758.38 = 203,426.92/x
  3. Step 3: Cross multiply
    487,853.56x = 731,758.38 × 203,426.92
  4. Step 4: Simplify right side
    487,853.56x = 148,859,353,427.59
  5. Step 5: Solve for x
    x = 148,859,353,427.59/487,853.56
  6. Step 6: Final answer
    x = 305,131.22

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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.