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Finding the Fourth Proportional to 381,972.74, 572,762.01 and 171,430.52

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Solution

The fourth proportional to 381,972.74, 572,762.01 and 171,430.52 is: 257,057.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,972.74 : 572,762.01 = 171,430.52 : x
  2. Step 2: Convert to fraction form
    381,972.74/572,762.01 = 171,430.52/x
  3. Step 3: Cross multiply
    381,972.74x = 572,762.01 × 171,430.52
  4. Step 4: Simplify right side
    381,972.74x = 98,188,889,210.55
  5. Step 5: Solve for x
    x = 98,188,889,210.55/381,972.74
  6. Step 6: Final answer
    x = 257,057.32

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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.