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Finding the Fourth Proportional to 545,072.31, 752,199.79 and 303,411.97

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Solution

The fourth proportional to 545,072.31, 752,199.79 and 303,411.97 is: 418,708.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,072.31 : 752,199.79 = 303,411.97 : x
  2. Step 2: Convert to fraction form
    545,072.31/752,199.79 = 303,411.97/x
  3. Step 3: Cross multiply
    545,072.31x = 752,199.79 × 303,411.97
  4. Step 4: Simplify right side
    545,072.31x = 228,226,418,479.19
  5. Step 5: Solve for x
    x = 228,226,418,479.19/545,072.31
  6. Step 6: Final answer
    x = 418,708.52

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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.