Home / 428,379.12-591,153.12-247,091.40

Finding the Fourth Proportional to 428,379.12, 591,153.12 and 247,091.40

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Solution

The fourth proportional to 428,379.12, 591,153.12 and 247,091.40 is: 340,980.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,379.12 : 591,153.12 = 247,091.40 : x
  2. Step 2: Convert to fraction form
    428,379.12/591,153.12 = 247,091.40/x
  3. Step 3: Cross multiply
    428,379.12x = 591,153.12 × 247,091.40
  4. Step 4: Simplify right side
    428,379.12x = 146,068,852,035.17
  5. Step 5: Solve for x
    x = 146,068,852,035.17/428,379.12
  6. Step 6: Final answer
    x = 340,980.33

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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.