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Finding the Fourth Proportional to 239,307.90, 330,244.18 and 131,877.90

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Solution

The fourth proportional to 239,307.90, 330,244.18 and 131,877.90 is: 181,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,307.90 : 330,244.18 = 131,877.90 : x
  2. Step 2: Convert to fraction form
    239,307.90/330,244.18 = 131,877.90/x
  3. Step 3: Cross multiply
    239,307.90x = 330,244.18 × 131,877.90
  4. Step 4: Simplify right side
    239,307.90x = 43,551,908,945.62
  5. Step 5: Solve for x
    x = 43,551,908,945.62/239,307.90
  6. Step 6: Final answer
    x = 181,991.10

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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.