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Finding the Fourth Proportional to 342,362.50, 472,375.36 and 221,358.18

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Solution

The fourth proportional to 342,362.50, 472,375.36 and 221,358.18 is: 305,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,362.50 : 472,375.36 = 221,358.18 : x
  2. Step 2: Convert to fraction form
    342,362.50/472,375.36 = 221,358.18/x
  3. Step 3: Cross multiply
    342,362.50x = 472,375.36 × 221,358.18
  4. Step 4: Simplify right side
    342,362.50x = 104,564,146,497.78
  5. Step 5: Solve for x
    x = 104,564,146,497.78/342,362.50
  6. Step 6: Final answer
    x = 305,419.40

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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.