Home / 213,284.10-319,738.68-87,030.66

Finding the Fourth Proportional to 213,284.10, 319,738.68 and 87,030.66

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Solution

The fourth proportional to 213,284.10, 319,738.68 and 87,030.66 is: 130,469.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,284.10 : 319,738.68 = 87,030.66 : x
  2. Step 2: Convert to fraction form
    213,284.10/319,738.68 = 87,030.66/x
  3. Step 3: Cross multiply
    213,284.10x = 319,738.68 × 87,030.66
  4. Step 4: Simplify right side
    213,284.10x = 27,827,068,347.93
  5. Step 5: Solve for x
    x = 27,827,068,347.93/213,284.10
  6. Step 6: Final answer
    x = 130,469.49

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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.