Home / 401,435.35-553,981.55-220,148.55

Finding the Fourth Proportional to 401,435.35, 553,981.55 and 220,148.55

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Solution

The fourth proportional to 401,435.35, 553,981.55 and 220,148.55 is: 303,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,435.35 : 553,981.55 = 220,148.55 : x
  2. Step 2: Convert to fraction form
    401,435.35/553,981.55 = 220,148.55/x
  3. Step 3: Cross multiply
    401,435.35x = 553,981.55 × 220,148.55
  4. Step 4: Simplify right side
    401,435.35x = 121,958,233,858.51
  5. Step 5: Solve for x
    x = 121,958,233,858.51/401,435.35
  6. Step 6: Final answer
    x = 303,805.42

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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.