Home / 213,899.40-320,842.30-101,660.36

Finding the Fourth Proportional to 213,899.40, 320,842.30 and 101,660.36

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Solution

The fourth proportional to 213,899.40, 320,842.30 and 101,660.36 is: 152,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,899.40 : 320,842.30 = 101,660.36 : x
  2. Step 2: Convert to fraction form
    213,899.40/320,842.30 = 101,660.36/x
  3. Step 3: Cross multiply
    213,899.40x = 320,842.30 × 101,660.36
  4. Step 4: Simplify right side
    213,899.40x = 32,616,943,721.23
  5. Step 5: Solve for x
    x = 32,616,943,721.23/213,899.40
  6. Step 6: Final answer
    x = 152,487.31

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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.