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Finding the Fourth Proportional to 401,286.68, 553,775.48 and 219,994.72

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Solution

The fourth proportional to 401,286.68, 553,775.48 and 219,994.72 is: 303,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,286.68 : 553,775.48 = 219,994.72 : x
  2. Step 2: Convert to fraction form
    401,286.68/553,775.48 = 219,994.72/x
  3. Step 3: Cross multiply
    401,286.68x = 553,775.48 × 219,994.72
  4. Step 4: Simplify right side
    401,286.68x = 121,827,683,579.74
  5. Step 5: Solve for x
    x = 121,827,683,579.74/401,286.68
  6. Step 6: Final answer
    x = 303,592.64

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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.