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Finding the Fourth Proportional to 368,658.64, 508,787.21 and 225,513.95

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Solution

The fourth proportional to 368,658.64, 508,787.21 and 225,513.95 is: 311,232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,658.64 : 508,787.21 = 225,513.95 : x
  2. Step 2: Convert to fraction form
    368,658.64/508,787.21 = 225,513.95/x
  3. Step 3: Cross multiply
    368,658.64x = 508,787.21 × 225,513.95
  4. Step 4: Simplify right side
    368,658.64x = 114,738,612,309.01
  5. Step 5: Solve for x
    x = 114,738,612,309.01/368,658.64
  6. Step 6: Final answer
    x = 311,232.67

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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.