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Finding the Fourth Proportional to 545,698.80, 818,548.20 and 171,721.80

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Solution

The fourth proportional to 545,698.80, 818,548.20 and 171,721.80 is: 257,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,698.80 : 818,548.20 = 171,721.80 : x
  2. Step 2: Convert to fraction form
    545,698.80/818,548.20 = 171,721.80/x
  3. Step 3: Cross multiply
    545,698.80x = 818,548.20 × 171,721.80
  4. Step 4: Simplify right side
    545,698.80x = 140,562,570,290.76
  5. Step 5: Solve for x
    x = 140,562,570,290.76/545,698.80
  6. Step 6: Final answer
    x = 257,582.70

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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.