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Finding the Fourth Proportional to 219,999.40, 329,415.90 and 173,343.40

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Solution

The fourth proportional to 219,999.40, 329,415.90 and 173,343.40 is: 259,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,999.40 : 329,415.90 = 173,343.40 : x
  2. Step 2: Convert to fraction form
    219,999.40/329,415.90 = 173,343.40/x
  3. Step 3: Cross multiply
    219,999.40x = 329,415.90 × 173,343.40
  4. Step 4: Simplify right side
    219,999.40x = 57,102,072,120.06
  5. Step 5: Solve for x
    x = 57,102,072,120.06/219,999.40
  6. Step 6: Final answer
    x = 259,555.58

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1.5x scale

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.