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Finding the Fourth Proportional to 250,781.68, 346,078.70 and 143,354.02

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Solution

The fourth proportional to 250,781.68, 346,078.70 and 143,354.02 is: 197,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,781.68 : 346,078.70 = 143,354.02 : x
  2. Step 2: Convert to fraction form
    250,781.68/346,078.70 = 143,354.02/x
  3. Step 3: Cross multiply
    250,781.68x = 346,078.70 × 143,354.02
  4. Step 4: Simplify right side
    250,781.68x = 49,611,772,881.37
  5. Step 5: Solve for x
    x = 49,611,772,881.37/250,781.68
  6. Step 6: Final answer
    x = 197,828.54

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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.