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Finding the Fourth Proportional to 221,372.16, 305,492.22 and 125,878.92

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Solution

The fourth proportional to 221,372.16, 305,492.22 and 125,878.92 is: 173,712.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,372.16 : 305,492.22 = 125,878.92 : x
  2. Step 2: Convert to fraction form
    221,372.16/305,492.22 = 125,878.92/x
  3. Step 3: Cross multiply
    221,372.16x = 305,492.22 × 125,878.92
  4. Step 4: Simplify right side
    221,372.16x = 38,455,030,722.00
  5. Step 5: Solve for x
    x = 38,455,030,722.00/221,372.16
  6. Step 6: Final answer
    x = 173,712.14

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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.