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Finding the Fourth Proportional to 209,572.31, 314,388.03 and 67,369.93

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Solution

The fourth proportional to 209,572.31, 314,388.03 and 67,369.93 is: 101,064.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,572.31 : 314,388.03 = 67,369.93 : x
  2. Step 2: Convert to fraction form
    209,572.31/314,388.03 = 67,369.93/x
  3. Step 3: Cross multiply
    209,572.31x = 314,388.03 × 67,369.93
  4. Step 4: Simplify right side
    209,572.31x = 21,180,299,040.61
  5. Step 5: Solve for x
    x = 21,180,299,040.61/209,572.31
  6. Step 6: Final answer
    x = 101,064.40

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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.