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Finding the Fourth Proportional to 400,850.68, 553,173.81 and 219,573.89

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Solution

The fourth proportional to 400,850.68, 553,173.81 and 219,573.89 is: 303,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,850.68 : 553,173.81 = 219,573.89 : x
  2. Step 2: Convert to fraction form
    400,850.68/553,173.81 = 219,573.89/x
  3. Step 3: Cross multiply
    400,850.68x = 553,173.81 × 219,573.89
  4. Step 4: Simplify right side
    400,850.68x = 121,462,525,307.82
  5. Step 5: Solve for x
    x = 121,462,525,307.82/400,850.68
  6. Step 6: Final answer
    x = 303,011.90

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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.