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Finding the Fourth Proportional to 302,661.60, 453,992.40 and 81,045.60

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Solution

The fourth proportional to 302,661.60, 453,992.40 and 81,045.60 is: 121,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,661.60 : 453,992.40 = 81,045.60 : x
  2. Step 2: Convert to fraction form
    302,661.60/453,992.40 = 81,045.60/x
  3. Step 3: Cross multiply
    302,661.60x = 453,992.40 × 81,045.60
  4. Step 4: Simplify right side
    302,661.60x = 36,794,086,453.44
  5. Step 5: Solve for x
    x = 36,794,086,453.44/302,661.60
  6. Step 6: Final answer
    x = 121,568.40

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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.