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Finding the Fourth Proportional to 243,372.15, 365,058.23 and 138,396.15

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Solution

The fourth proportional to 243,372.15, 365,058.23 and 138,396.15 is: 207,594.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,372.15 : 365,058.23 = 138,396.15 : x
  2. Step 2: Convert to fraction form
    243,372.15/365,058.23 = 138,396.15/x
  3. Step 3: Cross multiply
    243,372.15x = 365,058.23 × 138,396.15
  4. Step 4: Simplify right side
    243,372.15x = 50,522,652,865.83
  5. Step 5: Solve for x
    x = 50,522,652,865.83/243,372.15
  6. Step 6: Final answer
    x = 207,594.23

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1.5x scale

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.