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Finding the Fourth Proportional to 371,920.80, 557,881.20 and 222,621.60

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Solution

The fourth proportional to 371,920.80, 557,881.20 and 222,621.60 is: 333,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,920.80 : 557,881.20 = 222,621.60 : x
  2. Step 2: Convert to fraction form
    371,920.80/557,881.20 = 222,621.60/x
  3. Step 3: Cross multiply
    371,920.80x = 557,881.20 × 222,621.60
  4. Step 4: Simplify right side
    371,920.80x = 124,196,405,353.92
  5. Step 5: Solve for x
    x = 124,196,405,353.92/371,920.80
  6. Step 6: Final answer
    x = 333,932.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.