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Finding the Fourth Proportional to 528,563.75, 792,838.71 and 129,208.01

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Solution

The fourth proportional to 528,563.75, 792,838.71 and 129,208.01 is: 193,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,563.75 : 792,838.71 = 129,208.01 : x
  2. Step 2: Convert to fraction form
    528,563.75/792,838.71 = 129,208.01/x
  3. Step 3: Cross multiply
    528,563.75x = 792,838.71 × 129,208.01
  4. Step 4: Simplify right side
    528,563.75x = 102,441,108,005.87
  5. Step 5: Solve for x
    x = 102,441,108,005.87/528,563.75
  6. Step 6: Final answer
    x = 193,810.32

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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.