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Finding the Fourth Proportional to 402,250.28, 555,078.12 and 220,969.86

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Solution

The fourth proportional to 402,250.28, 555,078.12 and 220,969.86 is: 304,923.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,250.28 : 555,078.12 = 220,969.86 : x
  2. Step 2: Convert to fraction form
    402,250.28/555,078.12 = 220,969.86/x
  3. Step 3: Cross multiply
    402,250.28x = 555,078.12 × 220,969.86
  4. Step 4: Simplify right side
    402,250.28x = 122,655,534,465.46
  5. Step 5: Solve for x
    x = 122,655,534,465.46/402,250.28
  6. Step 6: Final answer
    x = 304,923.43

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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.