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Finding the Fourth Proportional to 545,228.08, 817,930.89 and 161,015.80

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Solution

The fourth proportional to 545,228.08, 817,930.89 and 161,015.80 is: 241,549.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,228.08 : 817,930.89 = 161,015.80 : x
  2. Step 2: Convert to fraction form
    545,228.08/817,930.89 = 161,015.80/x
  3. Step 3: Cross multiply
    545,228.08x = 817,930.89 × 161,015.80
  4. Step 4: Simplify right side
    545,228.08x = 131,699,796,598.06
  5. Step 5: Solve for x
    x = 131,699,796,598.06/545,228.08
  6. Step 6: Final answer
    x = 241,549.92

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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.