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Finding the Fourth Proportional to 309,707.82, 464,247.99 and 209,878.11

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Solution

The fourth proportional to 309,707.82, 464,247.99 and 209,878.11 is: 314,604.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,707.82 : 464,247.99 = 209,878.11 : x
  2. Step 2: Convert to fraction form
    309,707.82/464,247.99 = 209,878.11/x
  3. Step 3: Cross multiply
    309,707.82x = 464,247.99 × 209,878.11
  4. Step 4: Simplify right side
    309,707.82x = 97,435,490,712.50
  5. Step 5: Solve for x
    x = 97,435,490,712.50/309,707.82
  6. Step 6: Final answer
    x = 314,604.55

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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.