Home / 205,619.40-308,429.10-158,905.80

Finding the Fourth Proportional to 205,619.40, 308,429.10 and 158,905.80

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Solution

The fourth proportional to 205,619.40, 308,429.10 and 158,905.80 is: 238,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,619.40 : 308,429.10 = 158,905.80 : x
  2. Step 2: Convert to fraction form
    205,619.40/308,429.10 = 158,905.80/x
  3. Step 3: Cross multiply
    205,619.40x = 308,429.10 × 158,905.80
  4. Step 4: Simplify right side
    205,619.40x = 49,011,172,878.78
  5. Step 5: Solve for x
    x = 49,011,172,878.78/205,619.40
  6. Step 6: Final answer
    x = 238,358.70

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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.