Home / 401,283.47-553,759.18-219,989.20

Finding the Fourth Proportional to 401,283.47, 553,759.18 and 219,989.20

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Solution

The fourth proportional to 401,283.47, 553,759.18 and 219,989.20 is: 303,578.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,283.47 : 553,759.18 = 219,989.20 : x
  2. Step 2: Convert to fraction form
    401,283.47/553,759.18 = 219,989.20/x
  3. Step 3: Cross multiply
    401,283.47x = 553,759.18 × 219,989.20
  4. Step 4: Simplify right side
    401,283.47x = 121,821,039,000.86
  5. Step 5: Solve for x
    x = 121,821,039,000.86/401,283.47
  6. Step 6: Final answer
    x = 303,578.51

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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.