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Finding the Fourth Proportional to 545,242.46, 818,030.48 and 279,191.21

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Solution

The fourth proportional to 545,242.46, 818,030.48 and 279,191.21 is: 418,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,242.46 : 818,030.48 = 279,191.21 : x
  2. Step 2: Convert to fraction form
    545,242.46/818,030.48 = 279,191.21/x
  3. Step 3: Cross multiply
    545,242.46x = 818,030.48 × 279,191.21
  4. Step 4: Simplify right side
    545,242.46x = 228,386,914,041.97
  5. Step 5: Solve for x
    x = 228,386,914,041.97/545,242.46
  6. Step 6: Final answer
    x = 418,872.21

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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.