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Finding the Fourth Proportional to 201,635.90, 302,453.85 and 68,666.30

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Solution

The fourth proportional to 201,635.90, 302,453.85 and 68,666.30 is: 102,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,635.90 : 302,453.85 = 68,666.30 : x
  2. Step 2: Convert to fraction form
    201,635.90/302,453.85 = 68,666.30/x
  3. Step 3: Cross multiply
    201,635.90x = 302,453.85 × 68,666.30
  4. Step 4: Simplify right side
    201,635.90x = 20,768,386,800.26
  5. Step 5: Solve for x
    x = 20,768,386,800.26/201,635.90
  6. Step 6: Final answer
    x = 102,999.45

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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.