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Finding the Fourth Proportional to 291,641.40, 437,222.10 and 131,727.80

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Solution

The fourth proportional to 291,641.40, 437,222.10 and 131,727.80 is: 197,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,641.40 : 437,222.10 = 131,727.80 : x
  2. Step 2: Convert to fraction form
    291,641.40/437,222.10 = 131,727.80/x
  3. Step 3: Cross multiply
    291,641.40x = 437,222.10 × 131,727.80
  4. Step 4: Simplify right side
    291,641.40x = 57,594,305,344.38
  5. Step 5: Solve for x
    x = 57,594,305,344.38/291,641.40
  6. Step 6: Final answer
    x = 197,483.30

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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.