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Finding the Fourth Proportional to 521,896.47, 720,204.91 and 307,050.36

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Solution

The fourth proportional to 521,896.47, 720,204.91 and 307,050.36 is: 423,722.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,896.47 : 720,204.91 = 307,050.36 : x
  2. Step 2: Convert to fraction form
    521,896.47/720,204.91 = 307,050.36/x
  3. Step 3: Cross multiply
    521,896.47x = 720,204.91 × 307,050.36
  4. Step 4: Simplify right side
    521,896.47x = 221,139,176,889.27
  5. Step 5: Solve for x
    x = 221,139,176,889.27/521,896.47
  6. Step 6: Final answer
    x = 423,722.31

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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.