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Finding the Fourth Proportional to 428,208.32, 590,990.38 and 246,884.76

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Solution

The fourth proportional to 428,208.32, 590,990.38 and 246,884.76 is: 340,737.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,208.32 : 590,990.38 = 246,884.76 : x
  2. Step 2: Convert to fraction form
    428,208.32/590,990.38 = 246,884.76/x
  3. Step 3: Cross multiply
    428,208.32x = 590,990.38 × 246,884.76
  4. Step 4: Simplify right side
    428,208.32x = 145,906,517,511.40
  5. Step 5: Solve for x
    x = 145,906,517,511.40/428,208.32
  6. Step 6: Final answer
    x = 340,737.23

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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.