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Finding the Fourth Proportional to 250,628.99, 345,886.31 and 143,196.72

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Solution

The fourth proportional to 250,628.99, 345,886.31 and 143,196.72 is: 197,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,628.99 : 345,886.31 = 143,196.72 : x
  2. Step 2: Convert to fraction form
    250,628.99/345,886.31 = 143,196.72/x
  3. Step 3: Cross multiply
    250,628.99x = 345,886.31 × 143,196.72
  4. Step 4: Simplify right side
    250,628.99x = 49,529,784,368.92
  5. Step 5: Solve for x
    x = 49,529,784,368.92/250,628.99
  6. Step 6: Final answer
    x = 197,621.93

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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.