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Finding the Fourth Proportional to 445,665.65, 615,015.79 and 241,721.42

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Solution

The fourth proportional to 445,665.65, 615,015.79 and 241,721.42 is: 333,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,665.65 : 615,015.79 = 241,721.42 : x
  2. Step 2: Convert to fraction form
    445,665.65/615,015.79 = 241,721.42/x
  3. Step 3: Cross multiply
    445,665.65x = 615,015.79 × 241,721.42
  4. Step 4: Simplify right side
    445,665.65x = 148,662,486,401.84
  5. Step 5: Solve for x
    x = 148,662,486,401.84/445,665.65
  6. Step 6: Final answer
    x = 333,574.03

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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.