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Finding the Fourth Proportional to 342,667.50, 472,815.54 and 221,792.01

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Solution

The fourth proportional to 342,667.50, 472,815.54 and 221,792.01 is: 306,030.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,667.50 : 472,815.54 = 221,792.01 : x
  2. Step 2: Convert to fraction form
    342,667.50/472,815.54 = 221,792.01/x
  3. Step 3: Cross multiply
    342,667.50x = 472,815.54 × 221,792.01
  4. Step 4: Simplify right side
    342,667.50x = 104,866,708,975.84
  5. Step 5: Solve for x
    x = 104,866,708,975.84/342,667.50
  6. Step 6: Final answer
    x = 306,030.51

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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.