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Finding the Fourth Proportional to 342,516.17, 472,680 and 221,867.48

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Solution

The fourth proportional to 342,516.17, 472,680 and 221,867.48 is: 306,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,516.17 : 472,680 = 221,867.48 : x
  2. Step 2: Convert to fraction form
    342,516.17/472,680 = 221,867.48/x
  3. Step 3: Cross multiply
    342,516.17x = 472,680 × 221,867.48
  4. Step 4: Simplify right side
    342,516.17x = 104,872,318,083
  5. Step 5: Solve for x
    x = 104,872,318,083/342,516.17
  6. Step 6: Final answer
    x = 306,182.10

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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.