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Finding the Fourth Proportional to 311,792.90, 430,274.52 and 168,552.95

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Solution

The fourth proportional to 311,792.90, 430,274.52 and 168,552.95 is: 232,603.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,792.90 : 430,274.52 = 168,552.95 : x
  2. Step 2: Convert to fraction form
    311,792.90/430,274.52 = 168,552.95/x
  3. Step 3: Cross multiply
    311,792.90x = 430,274.52 × 168,552.95
  4. Step 4: Simplify right side
    311,792.90x = 72,524,037,504.46
  5. Step 5: Solve for x
    x = 72,524,037,504.46/311,792.90
  6. Step 6: Final answer
    x = 232,603.24

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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.