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Finding the Fourth Proportional to 545,990.46, 753,433.69 and 300,964.48

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Solution

The fourth proportional to 545,990.46, 753,433.69 and 300,964.48 is: 415,312.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,990.46 : 753,433.69 = 300,964.48 : x
  2. Step 2: Convert to fraction form
    545,990.46/753,433.69 = 300,964.48/x
  3. Step 3: Cross multiply
    545,990.46x = 753,433.69 × 300,964.48
  4. Step 4: Simplify right side
    545,990.46x = 226,756,778,725.33
  5. Step 5: Solve for x
    x = 226,756,778,725.33/545,990.46
  6. Step 6: Final answer
    x = 415,312.71

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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.