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Finding the Fourth Proportional to 201,454.40, 302,181.60 and 138,468.80

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Solution

The fourth proportional to 201,454.40, 302,181.60 and 138,468.80 is: 207,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,454.40 : 302,181.60 = 138,468.80 : x
  2. Step 2: Convert to fraction form
    201,454.40/302,181.60 = 138,468.80/x
  3. Step 3: Cross multiply
    201,454.40x = 302,181.60 × 138,468.80
  4. Step 4: Simplify right side
    201,454.40x = 41,842,723,534.08
  5. Step 5: Solve for x
    x = 41,842,723,534.08/201,454.40
  6. Step 6: Final answer
    x = 207,703.20

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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.