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Finding the Fourth Proportional to 521,898.45, 720,207.67 and 307,052.35

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Solution

The fourth proportional to 521,898.45, 720,207.67 and 307,052.35 is: 423,725.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,898.45 : 720,207.67 = 307,052.35 : x
  2. Step 2: Convert to fraction form
    521,898.45/720,207.67 = 307,052.35/x
  3. Step 3: Cross multiply
    521,898.45x = 720,207.67 × 307,052.35
  4. Step 4: Simplify right side
    521,898.45x = 221,141,456,026.26
  5. Step 5: Solve for x
    x = 221,141,456,026.26/521,898.45
  6. Step 6: Final answer
    x = 423,725.07

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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.