Home / 221,849.36-306,152.12-121,247.36

Finding the Fourth Proportional to 221,849.36, 306,152.12 and 121,247.36

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Solution

The fourth proportional to 221,849.36, 306,152.12 and 121,247.36 is: 167,321.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,849.36 : 306,152.12 = 121,247.36 : x
  2. Step 2: Convert to fraction form
    221,849.36/306,152.12 = 121,247.36/x
  3. Step 3: Cross multiply
    221,849.36x = 306,152.12 × 121,247.36
  4. Step 4: Simplify right side
    221,849.36x = 37,120,136,308.40
  5. Step 5: Solve for x
    x = 37,120,136,308.40/221,849.36
  6. Step 6: Final answer
    x = 167,321.36

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1.5x scale

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.