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Finding the Fourth Proportional to 445,891.04, 668,837.03 and 209,233.95

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Solution

The fourth proportional to 445,891.04, 668,837.03 and 209,233.95 is: 313,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,891.04 : 668,837.03 = 209,233.95 : x
  2. Step 2: Convert to fraction form
    445,891.04/668,837.03 = 209,233.95/x
  3. Step 3: Cross multiply
    445,891.04x = 668,837.03 × 209,233.95
  4. Step 4: Simplify right side
    445,891.04x = 139,943,412,647.00
  5. Step 5: Solve for x
    x = 139,943,412,647.00/445,891.04
  6. Step 6: Final answer
    x = 313,851.14

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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.