Home / 205,032.40-307,519.80-64,805.20

Finding the Fourth Proportional to 205,032.40, 307,519.80 and 64,805.20

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Solution

The fourth proportional to 205,032.40, 307,519.80 and 64,805.20 is: 97,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,032.40 : 307,519.80 = 64,805.20 : x
  2. Step 2: Convert to fraction form
    205,032.40/307,519.80 = 64,805.20/x
  3. Step 3: Cross multiply
    205,032.40x = 307,519.80 × 64,805.20
  4. Step 4: Simplify right side
    205,032.40x = 19,928,882,142.96
  5. Step 5: Solve for x
    x = 19,928,882,142.96/205,032.40
  6. Step 6: Final answer
    x = 97,198.70

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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.