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Finding the Fourth Proportional to 529,015.68, 730,039.08 and 287,296.32

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Solution

The fourth proportional to 529,015.68, 730,039.08 and 287,296.32 is: 396,467.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,015.68 : 730,039.08 = 287,296.32 : x
  2. Step 2: Convert to fraction form
    529,015.68/730,039.08 = 287,296.32/x
  3. Step 3: Cross multiply
    529,015.68x = 730,039.08 × 287,296.32
  4. Step 4: Simplify right side
    529,015.68x = 209,737,541,140.19
  5. Step 5: Solve for x
    x = 209,737,541,140.19/529,015.68
  6. Step 6: Final answer
    x = 396,467.53

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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.