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Finding the Fourth Proportional to 401,031.33, 553,423.37 and 219,741.79

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Solution

The fourth proportional to 401,031.33, 553,423.37 and 219,741.79 is: 303,243.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,031.33 : 553,423.37 = 219,741.79 : x
  2. Step 2: Convert to fraction form
    401,031.33/553,423.37 = 219,741.79/x
  3. Step 3: Cross multiply
    401,031.33x = 553,423.37 × 219,741.79
  4. Step 4: Simplify right side
    401,031.33x = 121,610,241,951.63
  5. Step 5: Solve for x
    x = 121,610,241,951.63/401,031.33
  6. Step 6: Final answer
    x = 303,243.74

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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.