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Finding the Fourth Proportional to 543,006.45, 749,393.78 and 301,313.79

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Solution

The fourth proportional to 543,006.45, 749,393.78 and 301,313.79 is: 415,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,006.45 : 749,393.78 = 301,313.79 : x
  2. Step 2: Convert to fraction form
    543,006.45/749,393.78 = 301,313.79/x
  3. Step 3: Cross multiply
    543,006.45x = 749,393.78 × 301,313.79
  4. Step 4: Simplify right side
    543,006.45x = 225,802,678,547.66
  5. Step 5: Solve for x
    x = 225,802,678,547.66/543,006.45
  6. Step 6: Final answer
    x = 415,837.93

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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.