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Finding the Fourth Proportional to 528,607.40, 792,998.22 and 213,037.64

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Solution

The fourth proportional to 528,607.40, 792,998.22 and 213,037.64 is: 319,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,607.40 : 792,998.22 = 213,037.64 : x
  2. Step 2: Convert to fraction form
    528,607.40/792,998.22 = 213,037.64/x
  3. Step 3: Cross multiply
    528,607.40x = 792,998.22 × 213,037.64
  4. Step 4: Simplify right side
    528,607.40x = 168,938,469,313.00
  5. Step 5: Solve for x
    x = 168,938,469,313.00/528,607.40
  6. Step 6: Final answer
    x = 319,591.57

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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.