Home / 213,267.18-319,899.85-86,879.24

Finding the Fourth Proportional to 213,267.18, 319,899.85 and 86,879.24

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Solution

The fourth proportional to 213,267.18, 319,899.85 and 86,879.24 is: 130,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,267.18 : 319,899.85 = 86,879.24 : x
  2. Step 2: Convert to fraction form
    213,267.18/319,899.85 = 86,879.24/x
  3. Step 3: Cross multiply
    213,267.18x = 319,899.85 × 86,879.24
  4. Step 4: Simplify right side
    213,267.18x = 27,792,655,844.11
  5. Step 5: Solve for x
    x = 27,792,655,844.11/213,267.18
  6. Step 6: Final answer
    x = 130,318.49

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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.