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Finding the Fourth Proportional to 311,839.20, 466,981.20 and 249,631.20

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Solution

The fourth proportional to 311,839.20, 466,981.20 and 249,631.20 is: 373,824.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,839.20 : 466,981.20 = 249,631.20 : x
  2. Step 2: Convert to fraction form
    311,839.20/466,981.20 = 249,631.20/x
  3. Step 3: Cross multiply
    311,839.20x = 466,981.20 × 249,631.20
  4. Step 4: Simplify right side
    311,839.20x = 116,573,077,333.44
  5. Step 5: Solve for x
    x = 116,573,077,333.44/311,839.20
  6. Step 6: Final answer
    x = 373,824.32

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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.