Home / 205,891.40-308,837.10-142,905.80

Finding the Fourth Proportional to 205,891.40, 308,837.10 and 142,905.80

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Solution

The fourth proportional to 205,891.40, 308,837.10 and 142,905.80 is: 214,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,891.40 : 308,837.10 = 142,905.80 : x
  2. Step 2: Convert to fraction form
    205,891.40/308,837.10 = 142,905.80/x
  3. Step 3: Cross multiply
    205,891.40x = 308,837.10 × 142,905.80
  4. Step 4: Simplify right side
    205,891.40x = 44,134,612,845.18
  5. Step 5: Solve for x
    x = 44,134,612,845.18/205,891.40
  6. Step 6: Final answer
    x = 214,358.70

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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.