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Finding the Fourth Proportional to 291,893.60, 438,034.80 and 134,040.80

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Solution

The fourth proportional to 291,893.60, 438,034.80 and 134,040.80 is: 201,150.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,893.60 : 438,034.80 = 134,040.80 : x
  2. Step 2: Convert to fraction form
    291,893.60/438,034.80 = 134,040.80/x
  3. Step 3: Cross multiply
    291,893.60x = 438,034.80 × 134,040.80
  4. Step 4: Simplify right side
    291,893.60x = 58,714,535,019.84
  5. Step 5: Solve for x
    x = 58,714,535,019.84/291,893.60
  6. Step 6: Final answer
    x = 201,150.47

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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.