Home / 428,343.12-591,103.44-247,055.40

Finding the Fourth Proportional to 428,343.12, 591,103.44 and 247,055.40

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Solution

The fourth proportional to 428,343.12, 591,103.44 and 247,055.40 is: 340,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,343.12 : 591,103.44 = 247,055.40 : x
  2. Step 2: Convert to fraction form
    428,343.12/591,103.44 = 247,055.40/x
  3. Step 3: Cross multiply
    428,343.12x = 591,103.44 × 247,055.40
  4. Step 4: Simplify right side
    428,343.12x = 146,035,296,810.58
  5. Step 5: Solve for x
    x = 146,035,296,810.58/428,343.12
  6. Step 6: Final answer
    x = 340,930.65

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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.