Home / 380,296.56-524,864.16-219,120.72

Finding the Fourth Proportional to 380,296.56, 524,864.16 and 219,120.72

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Solution

The fourth proportional to 380,296.56, 524,864.16 and 219,120.72 is: 302,418.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,296.56 : 524,864.16 = 219,120.72 : x
  2. Step 2: Convert to fraction form
    380,296.56/524,864.16 = 219,120.72/x
  3. Step 3: Cross multiply
    380,296.56x = 524,864.16 × 219,120.72
  4. Step 4: Simplify right side
    380,296.56x = 115,008,612,641.40
  5. Step 5: Solve for x
    x = 115,008,612,641.40/380,296.56
  6. Step 6: Final answer
    x = 302,418.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.