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Finding the Fourth Proportional to 529,795.80, 731,107.80 and 288,076.32

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Solution

The fourth proportional to 529,795.80, 731,107.80 and 288,076.32 is: 397,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,795.80 : 731,107.80 = 288,076.32 : x
  2. Step 2: Convert to fraction form
    529,795.80/731,107.80 = 288,076.32/x
  3. Step 3: Cross multiply
    529,795.80x = 731,107.80 × 288,076.32
  4. Step 4: Simplify right side
    529,795.80x = 210,614,844,547.30
  5. Step 5: Solve for x
    x = 210,614,844,547.30/529,795.80
  6. Step 6: Final answer
    x = 397,539.66

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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.