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Finding the Fourth Proportional to 325,557.32, 486,119.92 and 287,287.24

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Solution

The fourth proportional to 325,557.32, 486,119.92 and 287,287.24 is: 428,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,557.32 : 486,119.92 = 287,287.24 : x
  2. Step 2: Convert to fraction form
    325,557.32/486,119.92 = 287,287.24/x
  3. Step 3: Cross multiply
    325,557.32x = 486,119.92 × 287,287.24
  4. Step 4: Simplify right side
    325,557.32x = 139,656,050,125.82
  5. Step 5: Solve for x
    x = 139,656,050,125.82/325,557.32
  6. Step 6: Final answer
    x = 428,975.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.