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Finding the Fourth Proportional to 311,071.20, 466,261.20 and 170,930.40

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Solution

The fourth proportional to 311,071.20, 466,261.20 and 170,930.40 is: 256,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,071.20 : 466,261.20 = 170,930.40 : x
  2. Step 2: Convert to fraction form
    311,071.20/466,261.20 = 170,930.40/x
  3. Step 3: Cross multiply
    311,071.20x = 466,261.20 × 170,930.40
  4. Step 4: Simplify right side
    311,071.20x = 79,698,213,420.48
  5. Step 5: Solve for x
    x = 79,698,213,420.48/311,071.20
  6. Step 6: Final answer
    x = 256,205.70

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1.5x scale

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.