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Finding the Fourth Proportional to 291,211.71, 436,671.39 and 169,671.59

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Solution

The fourth proportional to 291,211.71, 436,671.39 and 169,671.59 is: 254,422.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,211.71 : 436,671.39 = 169,671.59 : x
  2. Step 2: Convert to fraction form
    291,211.71/436,671.39 = 169,671.59/x
  3. Step 3: Cross multiply
    291,211.71x = 436,671.39 × 169,671.59
  4. Step 4: Simplify right side
    291,211.71x = 74,090,726,865.45
  5. Step 5: Solve for x
    x = 74,090,726,865.45/291,211.71
  6. Step 6: Final answer
    x = 254,422.21

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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.