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Finding the Fourth Proportional to 561,247.05, 774,509.25 and 316,244.42

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Solution

The fourth proportional to 561,247.05, 774,509.25 and 316,244.42 is: 436,410.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,247.05 : 774,509.25 = 316,244.42 : x
  2. Step 2: Convert to fraction form
    561,247.05/774,509.25 = 316,244.42/x
  3. Step 3: Cross multiply
    561,247.05x = 774,509.25 × 316,244.42
  4. Step 4: Simplify right side
    561,247.05x = 244,934,231,673.08
  5. Step 5: Solve for x
    x = 244,934,231,673.08/561,247.05
  6. Step 6: Final answer
    x = 436,410.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.