Home / 414,531.08-621,812.70-130,415.40

Finding the Fourth Proportional to 414,531.08, 621,812.70 and 130,415.40

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Solution

The fourth proportional to 414,531.08, 621,812.70 and 130,415.40 is: 195,628.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,531.08 : 621,812.70 = 130,415.40 : x
  2. Step 2: Convert to fraction form
    414,531.08/621,812.70 = 130,415.40/x
  3. Step 3: Cross multiply
    414,531.08x = 621,812.70 × 130,415.40
  4. Step 4: Simplify right side
    414,531.08x = 81,093,951,995.58
  5. Step 5: Solve for x
    x = 81,093,951,995.58/414,531.08
  6. Step 6: Final answer
    x = 195,628.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.