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Finding the Fourth Proportional to 402,222.28, 555,051.54 and 223,385.80

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Solution

The fourth proportional to 402,222.28, 555,051.54 and 223,385.80 is: 308,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,222.28 : 555,051.54 = 223,385.80 : x
  2. Step 2: Convert to fraction form
    402,222.28/555,051.54 = 223,385.80/x
  3. Step 3: Cross multiply
    402,222.28x = 555,051.54 × 223,385.80
  4. Step 4: Simplify right side
    402,222.28x = 123,990,632,304.13
  5. Step 5: Solve for x
    x = 123,990,632,304.13/402,222.28
  6. Step 6: Final answer
    x = 308,263.96

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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.