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Finding the Fourth Proportional to 407,278.89, 611,156.49 and 170,601.75

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Solution

The fourth proportional to 407,278.89, 611,156.49 and 170,601.75 is: 256,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,278.89 : 611,156.49 = 170,601.75 : x
  2. Step 2: Convert to fraction form
    407,278.89/611,156.49 = 170,601.75/x
  3. Step 3: Cross multiply
    407,278.89x = 611,156.49 × 170,601.75
  4. Step 4: Simplify right side
    407,278.89x = 104,264,366,717.86
  5. Step 5: Solve for x
    x = 104,264,366,717.86/407,278.89
  6. Step 6: Final answer
    x = 256,002.38

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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.