Home / 291,869.40-437,771.70-81,528.60

Finding the Fourth Proportional to 291,869.40, 437,771.70 and 81,528.60

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Solution

The fourth proportional to 291,869.40, 437,771.70 and 81,528.60 is: 122,283.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,869.40 : 437,771.70 = 81,528.60 : x
  2. Step 2: Convert to fraction form
    291,869.40/437,771.70 = 81,528.60/x
  3. Step 3: Cross multiply
    291,869.40x = 437,771.70 × 81,528.60
  4. Step 4: Simplify right side
    291,869.40x = 35,690,913,820.62
  5. Step 5: Solve for x
    x = 35,690,913,820.62/291,869.40
  6. Step 6: Final answer
    x = 122,283.85

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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.