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Finding the Fourth Proportional to 551,553.33, 761,102.67 and 309,876.17

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Solution

The fourth proportional to 551,553.33, 761,102.67 and 309,876.17 is: 427,606.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,553.33 : 761,102.67 = 309,876.17 : x
  2. Step 2: Convert to fraction form
    551,553.33/761,102.67 = 309,876.17/x
  3. Step 3: Cross multiply
    551,553.33x = 761,102.67 × 309,876.17
  4. Step 4: Simplify right side
    551,553.33x = 235,847,576,550.86
  5. Step 5: Solve for x
    x = 235,847,576,550.86/551,553.33
  6. Step 6: Final answer
    x = 427,606.11

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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.