Home / 415,530.28-623,848.38-218,676.52

Finding the Fourth Proportional to 415,530.28, 623,848.38 and 218,676.52

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Solution

The fourth proportional to 415,530.28, 623,848.38 and 218,676.52 is: 328,305.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,530.28 : 623,848.38 = 218,676.52 : x
  2. Step 2: Convert to fraction form
    415,530.28/623,848.38 = 218,676.52/x
  3. Step 3: Cross multiply
    415,530.28x = 623,848.38 × 218,676.52
  4. Step 4: Simplify right side
    415,530.28x = 136,420,992,746.04
  5. Step 5: Solve for x
    x = 136,420,992,746.04/415,530.28
  6. Step 6: Final answer
    x = 328,305.78

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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.