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Finding the Fourth Proportional to 521,954.92, 720,263.68 and 307,053.46

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Solution

The fourth proportional to 521,954.92, 720,263.68 and 307,053.46 is: 423,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,954.92 : 720,263.68 = 307,053.46 : x
  2. Step 2: Convert to fraction form
    521,954.92/720,263.68 = 307,053.46/x
  3. Step 3: Cross multiply
    521,954.92x = 720,263.68 × 307,053.46
  4. Step 4: Simplify right side
    521,954.92x = 221,159,455,056.33
  5. Step 5: Solve for x
    x = 221,159,455,056.33/521,954.92
  6. Step 6: Final answer
    x = 423,713.71

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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.