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Finding the Fourth Proportional to 545,999.28, 818,999.04 and 213,342

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Solution

The fourth proportional to 545,999.28, 818,999.04 and 213,342 is: 320,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,999.28 : 818,999.04 = 213,342 : x
  2. Step 2: Convert to fraction form
    545,999.28/818,999.04 = 213,342/x
  3. Step 3: Cross multiply
    545,999.28x = 818,999.04 × 213,342
  4. Step 4: Simplify right side
    545,999.28x = 174,726,893,191.68
  5. Step 5: Solve for x
    x = 174,726,893,191.68/545,999.28
  6. Step 6: Final answer
    x = 320,013.05

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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.