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Finding the Fourth Proportional to 291,661.08, 437,648.48 and 281,045.15

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Solution

The fourth proportional to 291,661.08, 437,648.48 and 281,045.15 is: 421,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,661.08 : 437,648.48 = 281,045.15 : x
  2. Step 2: Convert to fraction form
    291,661.08/437,648.48 = 281,045.15/x
  3. Step 3: Cross multiply
    291,661.08x = 437,648.48 × 281,045.15
  4. Step 4: Simplify right side
    291,661.08x = 122,998,979,115.40
  5. Step 5: Solve for x
    x = 122,998,979,115.40/291,661.08
  6. Step 6: Final answer
    x = 421,718.86

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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.