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Finding the Fourth Proportional to 545,346.86, 818,187.35 and 279,294.26

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Solution

The fourth proportional to 545,346.86, 818,187.35 and 279,294.26 is: 419,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,346.86 : 818,187.35 = 279,294.26 : x
  2. Step 2: Convert to fraction form
    545,346.86/818,187.35 = 279,294.26/x
  3. Step 3: Cross multiply
    545,346.86x = 818,187.35 × 279,294.26
  4. Step 4: Simplify right side
    545,346.86x = 228,515,024,972.20
  5. Step 5: Solve for x
    x = 228,515,024,972.20/545,346.86
  6. Step 6: Final answer
    x = 419,026.94

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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.