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Finding the Fourth Proportional to 529,880, 731,227.52 and 288,157.39

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Solution

The fourth proportional to 529,880, 731,227.52 and 288,157.39 is: 397,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,880 : 731,227.52 = 288,157.39 : x
  2. Step 2: Convert to fraction form
    529,880/731,227.52 = 288,157.39/x
  3. Step 3: Cross multiply
    529,880x = 731,227.52 × 288,157.39
  4. Step 4: Simplify right side
    529,880x = 210,708,610,390.52
  5. Step 5: Solve for x
    x = 210,708,610,390.52/529,880
  6. Step 6: Final answer
    x = 397,653.45

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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.