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Finding the Fourth Proportional to 311,487.86, 467,270.71 and 121,923.76

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Solution

The fourth proportional to 311,487.86, 467,270.71 and 121,923.76 is: 182,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,487.86 : 467,270.71 = 121,923.76 : x
  2. Step 2: Convert to fraction form
    311,487.86/467,270.71 = 121,923.76/x
  3. Step 3: Cross multiply
    311,487.86x = 467,270.71 × 121,923.76
  4. Step 4: Simplify right side
    311,487.86x = 56,971,401,901.07
  5. Step 5: Solve for x
    x = 56,971,401,901.07/311,487.86
  6. Step 6: Final answer
    x = 182,900.87

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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.