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Finding the Fourth Proportional to 585,805.05, 878,707.62 and 211,740.57

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Solution

The fourth proportional to 585,805.05, 878,707.62 and 211,740.57 is: 317,610.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,805.05 : 878,707.62 = 211,740.57 : x
  2. Step 2: Convert to fraction form
    585,805.05/878,707.62 = 211,740.57/x
  3. Step 3: Cross multiply
    585,805.05x = 878,707.62 × 211,740.57
  4. Step 4: Simplify right side
    585,805.05x = 186,058,052,322.14
  5. Step 5: Solve for x
    x = 186,058,052,322.14/585,805.05
  6. Step 6: Final answer
    x = 317,610.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.