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Finding the Fourth Proportional to 257,842.73, 355,817.40 and 143,114.65

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Solution

The fourth proportional to 257,842.73, 355,817.40 and 143,114.65 is: 197,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,842.73 : 355,817.40 = 143,114.65 : x
  2. Step 2: Convert to fraction form
    257,842.73/355,817.40 = 143,114.65/x
  3. Step 3: Cross multiply
    257,842.73x = 355,817.40 × 143,114.65
  4. Step 4: Simplify right side
    257,842.73x = 50,922,682,664.91
  5. Step 5: Solve for x
    x = 50,922,682,664.91/257,842.73
  6. Step 6: Final answer
    x = 197,495.13

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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.