Home / 386,495.20-579,742.80-165,311.20

Finding the Fourth Proportional to 386,495.20, 579,742.80 and 165,311.20

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Solution

The fourth proportional to 386,495.20, 579,742.80 and 165,311.20 is: 247,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,495.20 : 579,742.80 = 165,311.20 : x
  2. Step 2: Convert to fraction form
    386,495.20/579,742.80 = 165,311.20/x
  3. Step 3: Cross multiply
    386,495.20x = 579,742.80 × 165,311.20
  4. Step 4: Simplify right side
    386,495.20x = 95,837,977,959.36
  5. Step 5: Solve for x
    x = 95,837,977,959.36/386,495.20
  6. Step 6: Final answer
    x = 247,966.80

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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.