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Finding the Fourth Proportional to 316,755.60, 437,129.78 and 180,786.84

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Solution

The fourth proportional to 316,755.60, 437,129.78 and 180,786.84 is: 249,489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,755.60 : 437,129.78 = 180,786.84 : x
  2. Step 2: Convert to fraction form
    316,755.60/437,129.78 = 180,786.84/x
  3. Step 3: Cross multiply
    316,755.60x = 437,129.78 × 180,786.84
  4. Step 4: Simplify right side
    316,755.60x = 79,027,311,596.10
  5. Step 5: Solve for x
    x = 79,027,311,596.10/316,755.60
  6. Step 6: Final answer
    x = 249,489.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.