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Finding the Fourth Proportional to 401,150.45, 553,562.51 and 219,849.53

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Solution

The fourth proportional to 401,150.45, 553,562.51 and 219,849.53 is: 303,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,150.45 : 553,562.51 = 219,849.53 : x
  2. Step 2: Convert to fraction form
    401,150.45/553,562.51 = 219,849.53/x
  3. Step 3: Cross multiply
    401,150.45x = 553,562.51 × 219,849.53
  4. Step 4: Simplify right side
    401,150.45x = 121,700,453,782.06
  5. Step 5: Solve for x
    x = 121,700,453,782.06/401,150.45
  6. Step 6: Final answer
    x = 303,378.58

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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.