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Finding the Fourth Proportional to 402,333.54, 555,230.08 and 221,057.23

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Solution

The fourth proportional to 402,333.54, 555,230.08 and 221,057.23 is: 305,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,333.54 : 555,230.08 = 221,057.23 : x
  2. Step 2: Convert to fraction form
    402,333.54/555,230.08 = 221,057.23/x
  3. Step 3: Cross multiply
    402,333.54x = 555,230.08 × 221,057.23
  4. Step 4: Simplify right side
    402,333.54x = 122,737,622,392.19
  5. Step 5: Solve for x
    x = 122,737,622,392.19/402,333.54
  6. Step 6: Final answer
    x = 305,064.36

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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.