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Finding the Fourth Proportional to 545,660.40, 818,101.80 and 208,570.80

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Solution

The fourth proportional to 545,660.40, 818,101.80 and 208,570.80 is: 312,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,660.40 : 818,101.80 = 208,570.80 : x
  2. Step 2: Convert to fraction form
    545,660.40/818,101.80 = 208,570.80/x
  3. Step 3: Cross multiply
    545,660.40x = 818,101.80 × 208,570.80
  4. Step 4: Simplify right side
    545,660.40x = 170,632,146,907.44
  5. Step 5: Solve for x
    x = 170,632,146,907.44/545,660.40
  6. Step 6: Final answer
    x = 312,707.59

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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.