Home / 346,979.40-520,890.30-220,619.40

Finding the Fourth Proportional to 346,979.40, 520,890.30 and 220,619.40

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Solution

The fourth proportional to 346,979.40, 520,890.30 and 220,619.40 is: 331,196.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,979.40 : 520,890.30 = 220,619.40 : x
  2. Step 2: Convert to fraction form
    346,979.40/520,890.30 = 220,619.40/x
  3. Step 3: Cross multiply
    346,979.40x = 520,890.30 × 220,619.40
  4. Step 4: Simplify right side
    346,979.40x = 114,918,505,451.82
  5. Step 5: Solve for x
    x = 114,918,505,451.82/346,979.40
  6. Step 6: Final answer
    x = 331,196.91

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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.