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Finding the Fourth Proportional to 469,850.67, 648,505.17 and 278,974.17

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Solution

The fourth proportional to 469,850.67, 648,505.17 and 278,974.17 is: 385,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,850.67 : 648,505.17 = 278,974.17 : x
  2. Step 2: Convert to fraction form
    469,850.67/648,505.17 = 278,974.17/x
  3. Step 3: Cross multiply
    469,850.67x = 648,505.17 × 278,974.17
  4. Step 4: Simplify right side
    469,850.67x = 180,916,191,541.46
  5. Step 5: Solve for x
    x = 180,916,191,541.46/469,850.67
  6. Step 6: Final answer
    x = 385,050.41

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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.