Home / 386,248.20-579,429.90-136,910.60

Finding the Fourth Proportional to 386,248.20, 579,429.90 and 136,910.60

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Solution

The fourth proportional to 386,248.20, 579,429.90 and 136,910.60 is: 205,386.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,248.20 : 579,429.90 = 136,910.60 : x
  2. Step 2: Convert to fraction form
    386,248.20/579,429.90 = 136,910.60/x
  3. Step 3: Cross multiply
    386,248.20x = 579,429.90 × 136,910.60
  4. Step 4: Simplify right side
    386,248.20x = 79,330,095,266.94
  5. Step 5: Solve for x
    x = 79,330,095,266.94/386,248.20
  6. Step 6: Final answer
    x = 205,386.32

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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.