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Finding the Fourth Proportional to 545,400.36, 818,144.28 and 190,406.52

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Solution

The fourth proportional to 545,400.36, 818,144.28 and 190,406.52 is: 285,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,400.36 : 818,144.28 = 190,406.52 : x
  2. Step 2: Convert to fraction form
    545,400.36/818,144.28 = 190,406.52/x
  3. Step 3: Cross multiply
    545,400.36x = 818,144.28 × 190,406.52
  4. Step 4: Simplify right side
    545,400.36x = 155,780,005,212.71
  5. Step 5: Solve for x
    x = 155,780,005,212.71/545,400.36
  6. Step 6: Final answer
    x = 285,625.05

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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.