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Finding the Fourth Proportional to 383,114.72, 528,677.60 and 211,026.98

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Solution

The fourth proportional to 383,114.72, 528,677.60 and 211,026.98 is: 291,205.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,114.72 : 528,677.60 = 211,026.98 : x
  2. Step 2: Convert to fraction form
    383,114.72/528,677.60 = 211,026.98/x
  3. Step 3: Cross multiply
    383,114.72x = 528,677.60 × 211,026.98
  4. Step 4: Simplify right side
    383,114.72x = 111,565,237,321.65
  5. Step 5: Solve for x
    x = 111,565,237,321.65/383,114.72
  6. Step 6: Final answer
    x = 291,205.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.