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Finding the Fourth Proportional to 342,954.10, 473,174.16 and 221,903.65

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Solution

The fourth proportional to 342,954.10, 473,174.16 and 221,903.65 is: 306,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,954.10 : 473,174.16 = 221,903.65 : x
  2. Step 2: Convert to fraction form
    342,954.10/473,174.16 = 221,903.65/x
  3. Step 3: Cross multiply
    342,954.10x = 473,174.16 × 221,903.65
  4. Step 4: Simplify right side
    342,954.10x = 104,999,072,949.01
  5. Step 5: Solve for x
    x = 104,999,072,949.01/342,954.10
  6. Step 6: Final answer
    x = 306,160.72

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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.