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Finding the Fourth Proportional to 486,513, 671,307.84 and 271,618.56

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Solution

The fourth proportional to 486,513, 671,307.84 and 271,618.56 is: 374,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,513 : 671,307.84 = 271,618.56 : x
  2. Step 2: Convert to fraction form
    486,513/671,307.84 = 271,618.56/x
  3. Step 3: Cross multiply
    486,513x = 671,307.84 × 271,618.56
  4. Step 4: Simplify right side
    486,513x = 182,339,668,817.51
  5. Step 5: Solve for x
    x = 182,339,668,817.51/486,513
  6. Step 6: Final answer
    x = 374,788.89

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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.