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Finding the Fourth Proportional to 271,639.40, 407,459.10 and 201,655.40

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Solution

The fourth proportional to 271,639.40, 407,459.10 and 201,655.40 is: 302,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,639.40 : 407,459.10 = 201,655.40 : x
  2. Step 2: Convert to fraction form
    271,639.40/407,459.10 = 201,655.40/x
  3. Step 3: Cross multiply
    271,639.40x = 407,459.10 × 201,655.40
  4. Step 4: Simplify right side
    271,639.40x = 82,166,327,794.14
  5. Step 5: Solve for x
    x = 82,166,327,794.14/271,639.40
  6. Step 6: Final answer
    x = 302,483.10

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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.