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Finding the Fourth Proportional to 239,385.81, 330,259.68 and 137,374.41

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Solution

The fourth proportional to 239,385.81, 330,259.68 and 137,374.41 is: 189,523.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,385.81 : 330,259.68 = 137,374.41 : x
  2. Step 2: Convert to fraction form
    239,385.81/330,259.68 = 137,374.41/x
  3. Step 3: Cross multiply
    239,385.81x = 330,259.68 × 137,374.41
  4. Step 4: Simplify right side
    239,385.81x = 45,369,228,686.79
  5. Step 5: Solve for x
    x = 45,369,228,686.79/239,385.81
  6. Step 6: Final answer
    x = 189,523.47

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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.