Home / 221,879.55-306,341.43-131,264.55

Finding the Fourth Proportional to 221,879.55, 306,341.43 and 131,264.55

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Solution

The fourth proportional to 221,879.55, 306,341.43 and 131,264.55 is: 181,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,879.55 : 306,341.43 = 131,264.55 : x
  2. Step 2: Convert to fraction form
    221,879.55/306,341.43 = 131,264.55/x
  3. Step 3: Cross multiply
    221,879.55x = 306,341.43 × 131,264.55
  4. Step 4: Simplify right side
    221,879.55x = 40,211,769,955.31
  5. Step 5: Solve for x
    x = 40,211,769,955.31/221,879.55
  6. Step 6: Final answer
    x = 181,232.43

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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.