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Finding the Fourth Proportional to 291,281.40, 436,743.90 and 113,583.60

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Solution

The fourth proportional to 291,281.40, 436,743.90 and 113,583.60 is: 170,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,281.40 : 436,743.90 = 113,583.60 : x
  2. Step 2: Convert to fraction form
    291,281.40/436,743.90 = 113,583.60/x
  3. Step 3: Cross multiply
    291,281.40x = 436,743.90 × 113,583.60
  4. Step 4: Simplify right side
    291,281.40x = 49,606,944,440.04
  5. Step 5: Solve for x
    x = 49,606,944,440.04/291,281.40
  6. Step 6: Final answer
    x = 170,305.91

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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.