Home / 428,140.87-590,809.02-234,509.96

Finding the Fourth Proportional to 428,140.87, 590,809.02 and 234,509.96

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Solution

The fourth proportional to 428,140.87, 590,809.02 and 234,509.96 is: 323,609.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,140.87 : 590,809.02 = 234,509.96 : x
  2. Step 2: Convert to fraction form
    428,140.87/590,809.02 = 234,509.96/x
  3. Step 3: Cross multiply
    428,140.87x = 590,809.02 × 234,509.96
  4. Step 4: Simplify right side
    428,140.87x = 138,550,599,647.84
  5. Step 5: Solve for x
    x = 138,550,599,647.84/428,140.87
  6. Step 6: Final answer
    x = 323,609.84

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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.