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Finding the Fourth Proportional to 311,341.05, 467,023.88 and 86,721.12

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Solution

The fourth proportional to 311,341.05, 467,023.88 and 86,721.12 is: 130,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,341.05 : 467,023.88 = 86,721.12 : x
  2. Step 2: Convert to fraction form
    311,341.05/467,023.88 = 86,721.12/x
  3. Step 3: Cross multiply
    311,341.05x = 467,023.88 × 86,721.12
  4. Step 4: Simplify right side
    311,341.05x = 40,500,833,940.35
  5. Step 5: Solve for x
    x = 40,500,833,940.35/311,341.05
  6. Step 6: Final answer
    x = 130,085.11

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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.