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Finding the Fourth Proportional to 529,101.19, 730,164.99 and 287,388.48

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Solution

The fourth proportional to 529,101.19, 730,164.99 and 287,388.48 is: 396,599.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,101.19 : 730,164.99 = 287,388.48 : x
  2. Step 2: Convert to fraction form
    529,101.19/730,164.99 = 287,388.48/x
  3. Step 3: Cross multiply
    529,101.19x = 730,164.99 × 287,388.48
  4. Step 4: Simplify right side
    529,101.19x = 209,841,006,625.32
  5. Step 5: Solve for x
    x = 209,841,006,625.32/529,101.19
  6. Step 6: Final answer
    x = 396,599.01

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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.