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Finding the Fourth Proportional to 270,492.60, 405,738.90 and 186,511.80

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Solution

The fourth proportional to 270,492.60, 405,738.90 and 186,511.80 is: 279,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,492.60 : 405,738.90 = 186,511.80 : x
  2. Step 2: Convert to fraction form
    270,492.60/405,738.90 = 186,511.80/x
  3. Step 3: Cross multiply
    270,492.60x = 405,738.90 × 186,511.80
  4. Step 4: Simplify right side
    270,492.60x = 75,675,092,569.02
  5. Step 5: Solve for x
    x = 75,675,092,569.02/270,492.60
  6. Step 6: Final answer
    x = 279,767.70

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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.