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Finding the Fourth Proportional to 239,214.50, 330,131.13 and 131,784.74

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Solution

The fourth proportional to 239,214.50, 330,131.13 and 131,784.74 is: 181,871.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,214.50 : 330,131.13 = 131,784.74 : x
  2. Step 2: Convert to fraction form
    239,214.50/330,131.13 = 131,784.74/x
  3. Step 3: Cross multiply
    239,214.50x = 330,131.13 × 131,784.74
  4. Step 4: Simplify right side
    239,214.50x = 43,506,245,132.96
  5. Step 5: Solve for x
    x = 43,506,245,132.96/239,214.50
  6. Step 6: Final answer
    x = 181,871.27

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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.