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Finding the Fourth Proportional to 529,715.16, 731,120.94 and 325,939.32

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Solution

The fourth proportional to 529,715.16, 731,120.94 and 325,939.32 is: 449,866.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,715.16 : 731,120.94 = 325,939.32 : x
  2. Step 2: Convert to fraction form
    529,715.16/731,120.94 = 325,939.32/x
  3. Step 3: Cross multiply
    529,715.16x = 731,120.94 × 325,939.32
  4. Step 4: Simplify right side
    529,715.16x = 238,301,062,021.36
  5. Step 5: Solve for x
    x = 238,301,062,021.36/529,715.16
  6. Step 6: Final answer
    x = 449,866.42

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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.