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Finding the Fourth Proportional to 311,015.69, 429,215.40 and 175,058.40

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Solution

The fourth proportional to 311,015.69, 429,215.40 and 175,058.40 is: 241,588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,015.69 : 429,215.40 = 175,058.40 : x
  2. Step 2: Convert to fraction form
    311,015.69/429,215.40 = 175,058.40/x
  3. Step 3: Cross multiply
    311,015.69x = 429,215.40 × 175,058.40
  4. Step 4: Simplify right side
    311,015.69x = 75,137,761,179.36
  5. Step 5: Solve for x
    x = 75,137,761,179.36/311,015.69
  6. Step 6: Final answer
    x = 241,588.33

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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.