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Finding the Fourth Proportional to 223,789.70, 308,836.44 and 137,798.28

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Solution

The fourth proportional to 223,789.70, 308,836.44 and 137,798.28 is: 190,165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,789.70 : 308,836.44 = 137,798.28 : x
  2. Step 2: Convert to fraction form
    223,789.70/308,836.44 = 137,798.28/x
  3. Step 3: Cross multiply
    223,789.70x = 308,836.44 × 137,798.28
  4. Step 4: Simplify right side
    223,789.70x = 42,557,130,233.32
  5. Step 5: Solve for x
    x = 42,557,130,233.32/223,789.70
  6. Step 6: Final answer
    x = 190,165.73

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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.