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Finding the Fourth Proportional to 571,138.38, 788,175.66 and 316,493.82

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Solution

The fourth proportional to 571,138.38, 788,175.66 and 316,493.82 is: 436,764.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,138.38 : 788,175.66 = 316,493.82 : x
  2. Step 2: Convert to fraction form
    571,138.38/788,175.66 = 316,493.82/x
  3. Step 3: Cross multiply
    571,138.38x = 788,175.66 × 316,493.82
  4. Step 4: Simplify right side
    571,138.38x = 249,452,725,464.42
  5. Step 5: Solve for x
    x = 249,452,725,464.42/571,138.38
  6. Step 6: Final answer
    x = 436,764.07

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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.