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Finding the Fourth Proportional to 368,874.46, 509,068.45 and 225,661.95

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Solution

The fourth proportional to 368,874.46, 509,068.45 and 225,661.95 is: 311,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,874.46 : 509,068.45 = 225,661.95 : x
  2. Step 2: Convert to fraction form
    368,874.46/509,068.45 = 225,661.95/x
  3. Step 3: Cross multiply
    368,874.46x = 509,068.45 × 225,661.95
  4. Step 4: Simplify right side
    368,874.46x = 114,877,378,123.21
  5. Step 5: Solve for x
    x = 114,877,378,123.21/368,874.46
  6. Step 6: Final answer
    x = 311,426.76

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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.