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Finding the Fourth Proportional to 577,913.40, 866,872.80 and 203,936.40

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Solution

The fourth proportional to 577,913.40, 866,872.80 and 203,936.40 is: 305,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,913.40 : 866,872.80 = 203,936.40 : x
  2. Step 2: Convert to fraction form
    577,913.40/866,872.80 = 203,936.40/x
  3. Step 3: Cross multiply
    577,913.40x = 866,872.80 × 203,936.40
  4. Step 4: Simplify right side
    577,913.40x = 176,786,918,089.92
  5. Step 5: Solve for x
    x = 176,786,918,089.92/577,913.40
  6. Step 6: Final answer
    x = 305,905.55

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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.