Home / 221,987.30-306,283.40-126,491.96

Finding the Fourth Proportional to 221,987.30, 306,283.40 and 126,491.96

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Solution

The fourth proportional to 221,987.30, 306,283.40 and 126,491.96 is: 174,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,987.30 : 306,283.40 = 126,491.96 : x
  2. Step 2: Convert to fraction form
    221,987.30/306,283.40 = 126,491.96/x
  3. Step 3: Cross multiply
    221,987.30x = 306,283.40 × 126,491.96
  4. Step 4: Simplify right side
    221,987.30x = 38,742,387,581.46
  5. Step 5: Solve for x
    x = 38,742,387,581.46/221,987.30
  6. Step 6: Final answer
    x = 174,525.24

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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.