Home / 380,279.64-524,815.05-216,939.74

Finding the Fourth Proportional to 380,279.64, 524,815.05 and 216,939.74

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Solution

The fourth proportional to 380,279.64, 524,815.05 and 216,939.74 is: 299,393.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,279.64 : 524,815.05 = 216,939.74 : x
  2. Step 2: Convert to fraction form
    380,279.64/524,815.05 = 216,939.74/x
  3. Step 3: Cross multiply
    380,279.64x = 524,815.05 × 216,939.74
  4. Step 4: Simplify right side
    380,279.64x = 113,853,240,495.09
  5. Step 5: Solve for x
    x = 113,853,240,495.09/380,279.64
  6. Step 6: Final answer
    x = 299,393.47

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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.