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Finding the Fourth Proportional to 428,238, 590,959.80 and 246,957.84

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Solution

The fourth proportional to 428,238, 590,959.80 and 246,957.84 is: 340,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,238 : 590,959.80 = 246,957.84 : x
  2. Step 2: Convert to fraction form
    428,238/590,959.80 = 246,957.84/x
  3. Step 3: Cross multiply
    428,238x = 590,959.80 × 246,957.84
  4. Step 4: Simplify right side
    428,238x = 145,942,155,734.83
  5. Step 5: Solve for x
    x = 145,942,155,734.83/428,238
  6. Step 6: Final answer
    x = 340,796.84

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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.