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Finding the Fourth Proportional to 306,288.32, 459,454.36 and 81,647.60

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Solution

The fourth proportional to 306,288.32, 459,454.36 and 81,647.60 is: 122,477.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,288.32 : 459,454.36 = 81,647.60 : x
  2. Step 2: Convert to fraction form
    306,288.32/459,454.36 = 81,647.60/x
  3. Step 3: Cross multiply
    306,288.32x = 459,454.36 × 81,647.60
  4. Step 4: Simplify right side
    306,288.32x = 37,513,345,803.54
  5. Step 5: Solve for x
    x = 37,513,345,803.54/306,288.32
  6. Step 6: Final answer
    x = 122,477.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.