Home / 221,264.10-305,255.25-128,068.53

Finding the Fourth Proportional to 221,264.10, 305,255.25 and 128,068.53

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Solution

The fourth proportional to 221,264.10, 305,255.25 and 128,068.53 is: 176,682.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,264.10 : 305,255.25 = 128,068.53 : x
  2. Step 2: Convert to fraction form
    221,264.10/305,255.25 = 128,068.53/x
  3. Step 3: Cross multiply
    221,264.10x = 305,255.25 × 128,068.53
  4. Step 4: Simplify right side
    221,264.10x = 39,093,591,142.28
  5. Step 5: Solve for x
    x = 39,093,591,142.28/221,264.10
  6. Step 6: Final answer
    x = 176,682.94

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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.