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Finding the Fourth Proportional to 529,087.08, 730,145.48 and 287,374.38

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Solution

The fourth proportional to 529,087.08, 730,145.48 and 287,374.38 is: 396,579.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,087.08 : 730,145.48 = 287,374.38 : x
  2. Step 2: Convert to fraction form
    529,087.08/730,145.48 = 287,374.38/x
  3. Step 3: Cross multiply
    529,087.08x = 730,145.48 × 287,374.38
  4. Step 4: Simplify right side
    529,087.08x = 209,825,103,187.93
  5. Step 5: Solve for x
    x = 209,825,103,187.93/529,087.08
  6. Step 6: Final answer
    x = 396,579.53

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1.5x scale

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.