Home / 221,435.51-305,572.21-130,820.66

Finding the Fourth Proportional to 221,435.51, 305,572.21 and 130,820.66

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Solution

The fourth proportional to 221,435.51, 305,572.21 and 130,820.66 is: 180,527.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,435.51 : 305,572.21 = 130,820.66 : x
  2. Step 2: Convert to fraction form
    221,435.51/305,572.21 = 130,820.66/x
  3. Step 3: Cross multiply
    221,435.51x = 305,572.21 × 130,820.66
  4. Step 4: Simplify right side
    221,435.51x = 39,975,158,189.86
  5. Step 5: Solve for x
    x = 39,975,158,189.86/221,435.51
  6. Step 6: Final answer
    x = 180,527.32

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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.