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Finding the Fourth Proportional to 503,685.60, 754,872.30 and 203,920.80

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Solution

The fourth proportional to 503,685.60, 754,872.30 and 203,920.80 is: 305,615.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,685.60 : 754,872.30 = 203,920.80 : x
  2. Step 2: Convert to fraction form
    503,685.60/754,872.30 = 203,920.80/x
  3. Step 3: Cross multiply
    503,685.60x = 754,872.30 × 203,920.80
  4. Step 4: Simplify right side
    503,685.60x = 153,934,163,313.84
  5. Step 5: Solve for x
    x = 153,934,163,313.84/503,685.60
  6. Step 6: Final answer
    x = 305,615.57

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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.