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Finding the Fourth Proportional to 381,729.86, 572,594.42 and 97,420.42

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Solution

The fourth proportional to 381,729.86, 572,594.42 and 97,420.42 is: 146,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,729.86 : 572,594.42 = 97,420.42 : x
  2. Step 2: Convert to fraction form
    381,729.86/572,594.42 = 97,420.42/x
  3. Step 3: Cross multiply
    381,729.86x = 572,594.42 × 97,420.42
  4. Step 4: Simplify right side
    381,729.86x = 55,782,389,297.36
  5. Step 5: Solve for x
    x = 55,782,389,297.36/381,729.86
  6. Step 6: Final answer
    x = 146,130.53

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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.