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Finding the Fourth Proportional to 239,232.13, 330,188.15 and 137,326.48

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Solution

The fourth proportional to 239,232.13, 330,188.15 and 137,326.48 is: 189,537.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,232.13 : 330,188.15 = 137,326.48 : x
  2. Step 2: Convert to fraction form
    239,232.13/330,188.15 = 137,326.48/x
  3. Step 3: Cross multiply
    239,232.13x = 330,188.15 × 137,326.48
  4. Step 4: Simplify right side
    239,232.13x = 45,343,574,865.11
  5. Step 5: Solve for x
    x = 45,343,574,865.11/239,232.13
  6. Step 6: Final answer
    x = 189,537.98

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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.