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Finding the Fourth Proportional to 201,455.10, 302,415.45 and 108,143.10

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Solution

The fourth proportional to 201,455.10, 302,415.45 and 108,143.10 is: 162,339.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,455.10 : 302,415.45 = 108,143.10 : x
  2. Step 2: Convert to fraction form
    201,455.10/302,415.45 = 108,143.10/x
  3. Step 3: Cross multiply
    201,455.10x = 302,415.45 × 108,143.10
  4. Step 4: Simplify right side
    201,455.10x = 32,704,144,250.90
  5. Step 5: Solve for x
    x = 32,704,144,250.90/201,455.10
  6. Step 6: Final answer
    x = 162,339.62

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1.5x scale

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.