Home / 428,107.12-590,780.37-234,518.68

Finding the Fourth Proportional to 428,107.12, 590,780.37 and 234,518.68

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Solution

The fourth proportional to 428,107.12, 590,780.37 and 234,518.68 is: 323,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,107.12 : 590,780.37 = 234,518.68 : x
  2. Step 2: Convert to fraction form
    428,107.12/590,780.37 = 234,518.68/x
  3. Step 3: Cross multiply
    428,107.12x = 590,780.37 × 234,518.68
  4. Step 4: Simplify right side
    428,107.12x = 138,549,029,517.93
  5. Step 5: Solve for x
    x = 138,549,029,517.93/428,107.12
  6. Step 6: Final answer
    x = 323,631.68

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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.