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Finding the Fourth Proportional to 428,808.63, 591,740.94 and 237,839.79

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Solution

The fourth proportional to 428,808.63, 591,740.94 and 237,839.79 is: 328,210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,808.63 : 591,740.94 = 237,839.79 : x
  2. Step 2: Convert to fraction form
    428,808.63/591,740.94 = 237,839.79/x
  3. Step 3: Cross multiply
    428,808.63x = 591,740.94 × 237,839.79
  4. Step 4: Simplify right side
    428,808.63x = 140,739,544,014.93
  5. Step 5: Solve for x
    x = 140,739,544,014.93/428,808.63
  6. Step 6: Final answer
    x = 328,210.61

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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.