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Finding the Fourth Proportional to 401,687.04, 602,841.60 and 214,855.68

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Solution

The fourth proportional to 401,687.04, 602,841.60 and 214,855.68 is: 322,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,687.04 : 602,841.60 = 214,855.68 : x
  2. Step 2: Convert to fraction form
    401,687.04/602,841.60 = 214,855.68/x
  3. Step 3: Cross multiply
    401,687.04x = 602,841.60 × 214,855.68
  4. Step 4: Simplify right side
    401,687.04x = 129,523,941,900.29
  5. Step 5: Solve for x
    x = 129,523,941,900.29/401,687.04
  6. Step 6: Final answer
    x = 322,449.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.