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Finding the Fourth Proportional to 239,402.76, 330,510.78 and 158,940.30

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Solution

The fourth proportional to 239,402.76, 330,510.78 and 158,940.30 is: 219,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,402.76 : 330,510.78 = 158,940.30 : x
  2. Step 2: Convert to fraction form
    239,402.76/330,510.78 = 158,940.30/x
  3. Step 3: Cross multiply
    239,402.76x = 330,510.78 × 158,940.30
  4. Step 4: Simplify right side
    239,402.76x = 52,531,482,526.43
  5. Step 5: Solve for x
    x = 52,531,482,526.43/239,402.76
  6. Step 6: Final answer
    x = 219,427.22

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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.