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Finding the Fourth Proportional to 223,117.86, 307,788.57 and 142,460.58

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Solution

The fourth proportional to 223,117.86, 307,788.57 and 142,460.58 is: 196,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,117.86 : 307,788.57 = 142,460.58 : x
  2. Step 2: Convert to fraction form
    223,117.86/307,788.57 = 142,460.58/x
  3. Step 3: Cross multiply
    223,117.86x = 307,788.57 × 142,460.58
  4. Step 4: Simplify right side
    223,117.86x = 43,847,738,199.57
  5. Step 5: Solve for x
    x = 43,847,738,199.57/223,117.86
  6. Step 6: Final answer
    x = 196,522.76

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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.