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Finding the Fourth Proportional to 311,485.85, 467,267.71 and 121,921.76

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Solution

The fourth proportional to 311,485.85, 467,267.71 and 121,921.76 is: 182,897.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,485.85 : 467,267.71 = 121,921.76 : x
  2. Step 2: Convert to fraction form
    311,485.85/467,267.71 = 121,921.76/x
  3. Step 3: Cross multiply
    311,485.85x = 467,267.71 × 121,921.76
  4. Step 4: Simplify right side
    311,485.85x = 56,970,098,953.23
  5. Step 5: Solve for x
    x = 56,970,098,953.23/311,485.85
  6. Step 6: Final answer
    x = 182,897.87

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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.