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Finding the Fourth Proportional to 545,978.59, 753,440.22 and 304,255.84

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Solution

The fourth proportional to 545,978.59, 753,440.22 and 304,255.84 is: 419,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,978.59 : 753,440.22 = 304,255.84 : x
  2. Step 2: Convert to fraction form
    545,978.59/753,440.22 = 304,255.84/x
  3. Step 3: Cross multiply
    545,978.59x = 753,440.22 × 304,255.84
  4. Step 4: Simplify right side
    545,978.59x = 229,238,587,025.89
  5. Step 5: Solve for x
    x = 229,238,587,025.89/545,978.59
  6. Step 6: Final answer
    x = 419,867.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.