Home / 205,316.40-307,974.60-142,330.80

Finding the Fourth Proportional to 205,316.40, 307,974.60 and 142,330.80

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Solution

The fourth proportional to 205,316.40, 307,974.60 and 142,330.80 is: 213,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,316.40 : 307,974.60 = 142,330.80 : x
  2. Step 2: Convert to fraction form
    205,316.40/307,974.60 = 142,330.80/x
  3. Step 3: Cross multiply
    205,316.40x = 307,974.60 × 142,330.80
  4. Step 4: Simplify right side
    205,316.40x = 43,834,271,197.68
  5. Step 5: Solve for x
    x = 43,834,271,197.68/205,316.40
  6. Step 6: Final answer
    x = 213,496.20

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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.