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Finding the Fourth Proportional to 545,964.81, 818,751.37 and 209,100.17

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Solution

The fourth proportional to 545,964.81, 818,751.37 and 209,100.17 is: 313,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,964.81 : 818,751.37 = 209,100.17 : x
  2. Step 2: Convert to fraction form
    545,964.81/818,751.37 = 209,100.17/x
  3. Step 3: Cross multiply
    545,964.81x = 818,751.37 × 209,100.17
  4. Step 4: Simplify right side
    545,964.81x = 171,201,050,654.73
  5. Step 5: Solve for x
    x = 171,201,050,654.73/545,964.81
  6. Step 6: Final answer
    x = 313,575.25

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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.