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Finding the Fourth Proportional to 547,068.48, 754,992.54 and 305,398.23

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Solution

The fourth proportional to 547,068.48, 754,992.54 and 305,398.23 is: 421,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,068.48 : 754,992.54 = 305,398.23 : x
  2. Step 2: Convert to fraction form
    547,068.48/754,992.54 = 305,398.23/x
  3. Step 3: Cross multiply
    547,068.48x = 754,992.54 × 305,398.23
  4. Step 4: Simplify right side
    547,068.48x = 230,573,385,379.20
  5. Step 5: Solve for x
    x = 230,573,385,379.20/547,068.48
  6. Step 6: Final answer
    x = 421,470.79

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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.