Home / 221,319.77-305,352.03-130,707.80

Finding the Fourth Proportional to 221,319.77, 305,352.03 and 130,707.80

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Solution

The fourth proportional to 221,319.77, 305,352.03 and 130,707.80 is: 180,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,319.77 : 305,352.03 = 130,707.80 : x
  2. Step 2: Convert to fraction form
    221,319.77/305,352.03 = 130,707.80/x
  3. Step 3: Cross multiply
    221,319.77x = 305,352.03 × 130,707.80
  4. Step 4: Simplify right side
    221,319.77x = 39,911,890,540.07
  5. Step 5: Solve for x
    x = 39,911,890,540.07/221,319.77
  6. Step 6: Final answer
    x = 180,335.86

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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.