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Finding the Fourth Proportional to 545,203.76, 817,935.03 and 171,226.76

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Solution

The fourth proportional to 545,203.76, 817,935.03 and 171,226.76 is: 256,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,203.76 : 817,935.03 = 171,226.76 : x
  2. Step 2: Convert to fraction form
    545,203.76/817,935.03 = 171,226.76/x
  3. Step 3: Cross multiply
    545,203.76x = 817,935.03 × 171,226.76
  4. Step 4: Simplify right side
    545,203.76x = 140,052,360,987.73
  5. Step 5: Solve for x
    x = 140,052,360,987.73/545,203.76
  6. Step 6: Final answer
    x = 256,880.77

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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.