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Finding the Fourth Proportional to 239,178.93, 330,081.10 and 137,203.64

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Solution

The fourth proportional to 239,178.93, 330,081.10 and 137,203.64 is: 189,349.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,178.93 : 330,081.10 = 137,203.64 : x
  2. Step 2: Convert to fraction form
    239,178.93/330,081.10 = 137,203.64/x
  3. Step 3: Cross multiply
    239,178.93x = 330,081.10 × 137,203.64
  4. Step 4: Simplify right side
    239,178.93x = 45,288,328,415.20
  5. Step 5: Solve for x
    x = 45,288,328,415.20/239,178.93
  6. Step 6: Final answer
    x = 189,349.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.