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Finding the Fourth Proportional to 369,371.66, 509,732.89 and 199,605.78

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Solution

The fourth proportional to 369,371.66, 509,732.89 and 199,605.78 is: 275,455.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,371.66 : 509,732.89 = 199,605.78 : x
  2. Step 2: Convert to fraction form
    369,371.66/509,732.89 = 199,605.78/x
  3. Step 3: Cross multiply
    369,371.66x = 509,732.89 × 199,605.78
  4. Step 4: Simplify right side
    369,371.66x = 101,745,631,100.10
  5. Step 5: Solve for x
    x = 101,745,631,100.10/369,371.66
  6. Step 6: Final answer
    x = 275,455.98

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1.5x scale

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.