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Finding the Fourth Proportional to 291,987.40, 437,835.30 and 134,037.40

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Solution

The fourth proportional to 291,987.40, 437,835.30 and 134,037.40 is: 200,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,987.40 : 437,835.30 = 134,037.40 : x
  2. Step 2: Convert to fraction form
    291,987.40/437,835.30 = 134,037.40/x
  3. Step 3: Cross multiply
    291,987.40x = 437,835.30 × 134,037.40
  4. Step 4: Simplify right side
    291,987.40x = 58,686,305,240.22
  5. Step 5: Solve for x
    x = 58,686,305,240.22/291,987.40
  6. Step 6: Final answer
    x = 200,989.17

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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.