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Finding the Fourth Proportional to 371,731.94, 513,033.81 and 220,828.94

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Solution

The fourth proportional to 371,731.94, 513,033.81 and 220,828.94 is: 304,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,731.94 : 513,033.81 = 220,828.94 : x
  2. Step 2: Convert to fraction form
    371,731.94/513,033.81 = 220,828.94/x
  3. Step 3: Cross multiply
    371,731.94x = 513,033.81 × 220,828.94
  4. Step 4: Simplify right side
    371,731.94x = 113,292,712,446.46
  5. Step 5: Solve for x
    x = 113,292,712,446.46/371,731.94
  6. Step 6: Final answer
    x = 304,769.92

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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.