Home / 401,416.05-553,961.79-220,117.20

Finding the Fourth Proportional to 401,416.05, 553,961.79 and 220,117.20

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Solution

The fourth proportional to 401,416.05, 553,961.79 and 220,117.20 is: 303,765.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,416.05 : 553,961.79 = 220,117.20 : x
  2. Step 2: Convert to fraction form
    401,416.05/553,961.79 = 220,117.20/x
  3. Step 3: Cross multiply
    401,416.05x = 553,961.79 × 220,117.20
  4. Step 4: Simplify right side
    401,416.05x = 121,936,518,121.79
  5. Step 5: Solve for x
    x = 121,936,518,121.79/401,416.05
  6. Step 6: Final answer
    x = 303,765.93

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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.