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Finding the Fourth Proportional to 203,552.30, 305,255.28 and 70,396.40

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Solution

The fourth proportional to 203,552.30, 305,255.28 and 70,396.40 is: 105,569.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,552.30 : 305,255.28 = 70,396.40 : x
  2. Step 2: Convert to fraction form
    203,552.30/305,255.28 = 70,396.40/x
  3. Step 3: Cross multiply
    203,552.30x = 305,255.28 × 70,396.40
  4. Step 4: Simplify right side
    203,552.30x = 21,488,872,792.99
  5. Step 5: Solve for x
    x = 21,488,872,792.99/203,552.30
  6. Step 6: Final answer
    x = 105,569.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.