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Finding the Fourth Proportional to 528,239.50, 792,420.88 and 191,438.80

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Solution

The fourth proportional to 528,239.50, 792,420.88 and 191,438.80 is: 287,180.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,239.50 : 792,420.88 = 191,438.80 : x
  2. Step 2: Convert to fraction form
    528,239.50/792,420.88 = 191,438.80/x
  3. Step 3: Cross multiply
    528,239.50x = 792,420.88 × 191,438.80
  4. Step 4: Simplify right side
    528,239.50x = 151,700,102,362.14
  5. Step 5: Solve for x
    x = 151,700,102,362.14/528,239.50
  6. Step 6: Final answer
    x = 287,180.54

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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.