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Finding the Fourth Proportional to 287,350.56, 396,436.56 and 286,907.52

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Solution

The fourth proportional to 287,350.56, 396,436.56 and 286,907.52 is: 395,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,350.56 : 396,436.56 = 286,907.52 : x
  2. Step 2: Convert to fraction form
    287,350.56/396,436.56 = 286,907.52/x
  3. Step 3: Cross multiply
    287,350.56x = 396,436.56 × 286,907.52
  4. Step 4: Simplify right side
    287,350.56x = 113,740,630,266.93
  5. Step 5: Solve for x
    x = 113,740,630,266.93/287,350.56
  6. Step 6: Final answer
    x = 395,825.33

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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.