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Finding the Fourth Proportional to 521,972.44, 720,309.71 and 307,126.42

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Solution

The fourth proportional to 521,972.44, 720,309.71 and 307,126.42 is: 423,827.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,972.44 : 720,309.71 = 307,126.42 : x
  2. Step 2: Convert to fraction form
    521,972.44/720,309.71 = 307,126.42/x
  3. Step 3: Cross multiply
    521,972.44x = 720,309.71 × 307,126.42
  4. Step 4: Simplify right side
    521,972.44x = 221,226,141,490.58
  5. Step 5: Solve for x
    x = 221,226,141,490.58/521,972.44
  6. Step 6: Final answer
    x = 423,827.25

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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.