Home / 340,619.40-470,064.60-187,667.28

Finding the Fourth Proportional to 340,619.40, 470,064.60 and 187,667.28

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Solution

The fourth proportional to 340,619.40, 470,064.60 and 187,667.28 is: 258,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,619.40 : 470,064.60 = 187,667.28 : x
  2. Step 2: Convert to fraction form
    340,619.40/470,064.60 = 187,667.28/x
  3. Step 3: Cross multiply
    340,619.40x = 470,064.60 × 187,667.28
  4. Step 4: Simplify right side
    340,619.40x = 88,215,744,906.29
  5. Step 5: Solve for x
    x = 88,215,744,906.29/340,619.40
  6. Step 6: Final answer
    x = 258,986.26

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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.