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Finding the Fourth Proportional to 342,706.50, 472,089.94 and 291,555.41

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Solution

The fourth proportional to 342,706.50, 472,089.94 and 291,555.41 is: 401,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,706.50 : 472,089.94 = 291,555.41 : x
  2. Step 2: Convert to fraction form
    342,706.50/472,089.94 = 291,555.41/x
  3. Step 3: Cross multiply
    342,706.50x = 472,089.94 × 291,555.41
  4. Step 4: Simplify right side
    342,706.50x = 137,640,372,195.35
  5. Step 5: Solve for x
    x = 137,640,372,195.35/342,706.50
  6. Step 6: Final answer
    x = 401,627.55

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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.