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Finding the Fourth Proportional to 239,507.56, 330,520.35 and 137,539.72

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Solution

The fourth proportional to 239,507.56, 330,520.35 and 137,539.72 is: 189,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,507.56 : 330,520.35 = 137,539.72 : x
  2. Step 2: Convert to fraction form
    239,507.56/330,520.35 = 137,539.72/x
  3. Step 3: Cross multiply
    239,507.56x = 330,520.35 × 137,539.72
  4. Step 4: Simplify right side
    239,507.56x = 45,459,676,393.30
  5. Step 5: Solve for x
    x = 45,459,676,393.30/239,507.56
  6. Step 6: Final answer
    x = 189,804.77

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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.