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Finding the Fourth Proportional to 401,452.40, 601,487.40 and 211,631.60

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Solution

The fourth proportional to 401,452.40, 601,487.40 and 211,631.60 is: 317,083.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,452.40 : 601,487.40 = 211,631.60 : x
  2. Step 2: Convert to fraction form
    401,452.40/601,487.40 = 211,631.60/x
  3. Step 3: Cross multiply
    401,452.40x = 601,487.40 × 211,631.60
  4. Step 4: Simplify right side
    401,452.40x = 127,293,740,841.84
  5. Step 5: Solve for x
    x = 127,293,740,841.84/401,452.40
  6. Step 6: Final answer
    x = 317,083.02

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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.