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Finding the Fourth Proportional to 346,858.60, 520,076.70 and 136,244.20

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Solution

The fourth proportional to 346,858.60, 520,076.70 and 136,244.20 is: 204,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,858.60 : 520,076.70 = 136,244.20 : x
  2. Step 2: Convert to fraction form
    346,858.60/520,076.70 = 136,244.20/x
  3. Step 3: Cross multiply
    346,858.60x = 520,076.70 × 136,244.20
  4. Step 4: Simplify right side
    346,858.60x = 70,857,433,930.14
  5. Step 5: Solve for x
    x = 70,857,433,930.14/346,858.60
  6. Step 6: Final answer
    x = 204,283.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.