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Finding the Fourth Proportional to 545,269.84, 817,777.56 and 208,186.72

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Solution

The fourth proportional to 545,269.84, 817,777.56 and 208,186.72 is: 312,231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,269.84 : 817,777.56 = 208,186.72 : x
  2. Step 2: Convert to fraction form
    545,269.84/817,777.56 = 208,186.72/x
  3. Step 3: Cross multiply
    545,269.84x = 817,777.56 × 208,186.72
  4. Step 4: Simplify right side
    545,269.84x = 170,250,427,906.00
  5. Step 5: Solve for x
    x = 170,250,427,906.00/545,269.84
  6. Step 6: Final answer
    x = 312,231.51

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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.