Home / 383,122.72-528,688.64-211,035

Finding the Fourth Proportional to 383,122.72, 528,688.64 and 211,035

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Solution

The fourth proportional to 383,122.72, 528,688.64 and 211,035 is: 291,216.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,122.72 : 528,688.64 = 211,035 : x
  2. Step 2: Convert to fraction form
    383,122.72/528,688.64 = 211,035/x
  3. Step 3: Cross multiply
    383,122.72x = 528,688.64 × 211,035
  4. Step 4: Simplify right side
    383,122.72x = 111,571,807,142.40
  5. Step 5: Solve for x
    x = 111,571,807,142.40/383,122.72
  6. Step 6: Final answer
    x = 291,216.89

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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.