Home / 402,524.66-555,485.19-221,255.16

Finding the Fourth Proportional to 402,524.66, 555,485.19 and 221,255.16

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Solution

The fourth proportional to 402,524.66, 555,485.19 and 221,255.16 is: 305,332.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,524.66 : 555,485.19 = 221,255.16 : x
  2. Step 2: Convert to fraction form
    402,524.66/555,485.19 = 221,255.16/x
  3. Step 3: Cross multiply
    402,524.66x = 555,485.19 × 221,255.16
  4. Step 4: Simplify right side
    402,524.66x = 122,903,964,591.08
  5. Step 5: Solve for x
    x = 122,903,964,591.08/402,524.66
  6. Step 6: Final answer
    x = 305,332.76

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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.