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Finding the Fourth Proportional to 545,888.78, 818,833.17 and 213,231.50

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Solution

The fourth proportional to 545,888.78, 818,833.17 and 213,231.50 is: 319,847.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,888.78 : 818,833.17 = 213,231.50 : x
  2. Step 2: Convert to fraction form
    545,888.78/818,833.17 = 213,231.50/x
  3. Step 3: Cross multiply
    545,888.78x = 818,833.17 × 213,231.50
  4. Step 4: Simplify right side
    545,888.78x = 174,601,025,088.86
  5. Step 5: Solve for x
    x = 174,601,025,088.86/545,888.78
  6. Step 6: Final answer
    x = 319,847.25

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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.