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Finding the Fourth Proportional to 239,509.53, 330,487.02 and 137,539.44

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Solution

The fourth proportional to 239,509.53, 330,487.02 and 137,539.44 is: 189,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,509.53 : 330,487.02 = 137,539.44 : x
  2. Step 2: Convert to fraction form
    239,509.53/330,487.02 = 137,539.44/x
  3. Step 3: Cross multiply
    239,509.53x = 330,487.02 × 137,539.44
  4. Step 4: Simplify right side
    239,509.53x = 45,454,999,658.07
  5. Step 5: Solve for x
    x = 45,454,999,658.07/239,509.53
  6. Step 6: Final answer
    x = 189,783.68

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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.