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Finding the Fourth Proportional to 545,840.80, 818,469.60 and 190,866.40

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Solution

The fourth proportional to 545,840.80, 818,469.60 and 190,866.40 is: 286,197.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,840.80 : 818,469.60 = 190,866.40 : x
  2. Step 2: Convert to fraction form
    545,840.80/818,469.60 = 190,866.40/x
  3. Step 3: Cross multiply
    545,840.80x = 818,469.60 × 190,866.40
  4. Step 4: Simplify right side
    545,840.80x = 156,218,346,061.44
  5. Step 5: Solve for x
    x = 156,218,346,061.44/545,840.80
  6. Step 6: Final answer
    x = 286,197.64

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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.