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Finding the Fourth Proportional to 243,788.60, 336,429.14 and 136,351.77

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Solution

The fourth proportional to 243,788.60, 336,429.14 and 136,351.77 is: 188,165.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,788.60 : 336,429.14 = 136,351.77 : x
  2. Step 2: Convert to fraction form
    243,788.60/336,429.14 = 136,351.77/x
  3. Step 3: Cross multiply
    243,788.60x = 336,429.14 × 136,351.77
  4. Step 4: Simplify right side
    243,788.60x = 45,872,706,775.21
  5. Step 5: Solve for x
    x = 45,872,706,775.21/243,788.60
  6. Step 6: Final answer
    x = 188,165.92

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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.