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Finding the Fourth Proportional to 342,331.72, 472,258.62 and 221,511.88

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Solution

The fourth proportional to 342,331.72, 472,258.62 and 221,511.88 is: 305,583.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,331.72 : 472,258.62 = 221,511.88 : x
  2. Step 2: Convert to fraction form
    342,331.72/472,258.62 = 221,511.88/x
  3. Step 3: Cross multiply
    342,331.72x = 472,258.62 × 221,511.88
  4. Step 4: Simplify right side
    342,331.72x = 104,610,894,762.41
  5. Step 5: Solve for x
    x = 104,610,894,762.41/342,331.72
  6. Step 6: Final answer
    x = 305,583.41

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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.