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Finding the Fourth Proportional to 664,771.20, 997,009.92 and 191,351.04

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Solution

The fourth proportional to 664,771.20, 997,009.92 and 191,351.04 is: 286,984.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,771.20 : 997,009.92 = 191,351.04 : x
  2. Step 2: Convert to fraction form
    664,771.20/997,009.92 = 191,351.04/x
  3. Step 3: Cross multiply
    664,771.20x = 997,009.92 × 191,351.04
  4. Step 4: Simplify right side
    664,771.20x = 190,778,885,082.32
  5. Step 5: Solve for x
    x = 190,778,885,082.32/664,771.20
  6. Step 6: Final answer
    x = 286,984.28

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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.