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Finding the Fourth Proportional to 545,225.96, 818,005.68 and 279,174.66

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Solution

The fourth proportional to 545,225.96, 818,005.68 and 279,174.66 is: 418,847.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,225.96 : 818,005.68 = 279,174.66 : x
  2. Step 2: Convert to fraction form
    545,225.96/818,005.68 = 279,174.66/x
  3. Step 3: Cross multiply
    545,225.96x = 818,005.68 × 279,174.66
  4. Step 4: Simplify right side
    545,225.96x = 228,366,457,592.07
  5. Step 5: Solve for x
    x = 228,366,457,592.07/545,225.96
  6. Step 6: Final answer
    x = 418,847.37

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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.