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Finding the Fourth Proportional to 206,070.40, 308,932.80 and 107,574.40

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Solution

The fourth proportional to 206,070.40, 308,932.80 and 107,574.40 is: 161,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,070.40 : 308,932.80 = 107,574.40 : x
  2. Step 2: Convert to fraction form
    206,070.40/308,932.80 = 107,574.40/x
  3. Step 3: Cross multiply
    206,070.40x = 308,932.80 × 107,574.40
  4. Step 4: Simplify right side
    206,070.40x = 33,233,260,600.32
  5. Step 5: Solve for x
    x = 33,233,260,600.32/206,070.40
  6. Step 6: Final answer
    x = 161,271.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.