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Finding the Fourth Proportional to 342,344.90, 472,276.78 and 221,525.24

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Solution

The fourth proportional to 342,344.90, 472,276.78 and 221,525.24 is: 305,601.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,344.90 : 472,276.78 = 221,525.24 : x
  2. Step 2: Convert to fraction form
    342,344.90/472,276.78 = 221,525.24/x
  3. Step 3: Cross multiply
    342,344.90x = 472,276.78 × 221,525.24
  4. Step 4: Simplify right side
    342,344.90x = 104,621,224,120.73
  5. Step 5: Solve for x
    x = 104,621,224,120.73/342,344.90
  6. Step 6: Final answer
    x = 305,601.82

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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.