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Finding the Fourth Proportional to 217,070.70, 325,606.05 and 146,211.90

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Solution

The fourth proportional to 217,070.70, 325,606.05 and 146,211.90 is: 219,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,070.70 : 325,606.05 = 146,211.90 : x
  2. Step 2: Convert to fraction form
    217,070.70/325,606.05 = 146,211.90/x
  3. Step 3: Cross multiply
    217,070.70x = 325,606.05 × 146,211.90
  4. Step 4: Simplify right side
    217,070.70x = 47,607,479,222.00
  5. Step 5: Solve for x
    x = 47,607,479,222.00/217,070.70
  6. Step 6: Final answer
    x = 219,317.85

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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.