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Finding the Fourth Proportional to 545,312.28, 818,342.03 and 190,326.30

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Solution

The fourth proportional to 545,312.28, 818,342.03 and 190,326.30 is: 285,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,312.28 : 818,342.03 = 190,326.30 : x
  2. Step 2: Convert to fraction form
    545,312.28/818,342.03 = 190,326.30/x
  3. Step 3: Cross multiply
    545,312.28x = 818,342.03 × 190,326.30
  4. Step 4: Simplify right side
    545,312.28x = 155,752,010,704.39
  5. Step 5: Solve for x
    x = 155,752,010,704.39/545,312.28
  6. Step 6: Final answer
    x = 285,619.85

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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.