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Finding the Fourth Proportional to 201,813.30, 302,503.95 and 68,570.10

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Solution

The fourth proportional to 201,813.30, 302,503.95 and 68,570.10 is: 102,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,813.30 : 302,503.95 = 68,570.10 : x
  2. Step 2: Convert to fraction form
    201,813.30/302,503.95 = 68,570.10/x
  3. Step 3: Cross multiply
    201,813.30x = 302,503.95 × 68,570.10
  4. Step 4: Simplify right side
    201,813.30x = 20,742,726,101.90
  5. Step 5: Solve for x
    x = 20,742,726,101.90/201,813.30
  6. Step 6: Final answer
    x = 102,781.76

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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.