Home / 279,935.40-420,032.70-146,965.80

Finding the Fourth Proportional to 279,935.40, 420,032.70 and 146,965.80

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Solution

The fourth proportional to 279,935.40, 420,032.70 and 146,965.80 is: 220,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,935.40 : 420,032.70 = 146,965.80 : x
  2. Step 2: Convert to fraction form
    279,935.40/420,032.70 = 146,965.80/x
  3. Step 3: Cross multiply
    279,935.40x = 420,032.70 × 146,965.80
  4. Step 4: Simplify right side
    279,935.40x = 61,730,441,781.66
  5. Step 5: Solve for x
    x = 61,730,441,781.66/279,935.40
  6. Step 6: Final answer
    x = 220,516.74

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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.