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Finding the Fourth Proportional to 311,482.43, 466,838.18 and 221,381.58

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Solution

The fourth proportional to 311,482.43, 466,838.18 and 221,381.58 is: 331,798.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,482.43 : 466,838.18 = 221,381.58 : x
  2. Step 2: Convert to fraction form
    311,482.43/466,838.18 = 221,381.58/x
  3. Step 3: Cross multiply
    311,482.43x = 466,838.18 × 221,381.58
  4. Step 4: Simplify right side
    311,482.43x = 103,349,373,892.72
  5. Step 5: Solve for x
    x = 103,349,373,892.72/311,482.43
  6. Step 6: Final answer
    x = 331,798.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.