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Finding the Fourth Proportional to 529,202.12, 730,303.98 and 287,486.51

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Solution

The fourth proportional to 529,202.12, 730,303.98 and 287,486.51 is: 396,734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,202.12 : 730,303.98 = 287,486.51 : x
  2. Step 2: Convert to fraction form
    529,202.12/730,303.98 = 287,486.51/x
  3. Step 3: Cross multiply
    529,202.12x = 730,303.98 × 287,486.51
  4. Step 4: Simplify right side
    529,202.12x = 209,952,542,449.31
  5. Step 5: Solve for x
    x = 209,952,542,449.31/529,202.12
  6. Step 6: Final answer
    x = 396,734.13

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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.