Home / 300,126.72-414,302.40-187,005.36

Finding the Fourth Proportional to 300,126.72, 414,302.40 and 187,005.36

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Solution

The fourth proportional to 300,126.72, 414,302.40 and 187,005.36 is: 258,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,126.72 : 414,302.40 = 187,005.36 : x
  2. Step 2: Convert to fraction form
    300,126.72/414,302.40 = 187,005.36/x
  3. Step 3: Cross multiply
    300,126.72x = 414,302.40 × 187,005.36
  4. Step 4: Simplify right side
    300,126.72x = 77,476,769,460.86
  5. Step 5: Solve for x
    x = 77,476,769,460.86/300,126.72
  6. Step 6: Final answer
    x = 258,146.86

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1.5x scale

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.