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Finding the Fourth Proportional to 346,719.80, 520,079.70 and 136,364.60

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Solution

The fourth proportional to 346,719.80, 520,079.70 and 136,364.60 is: 204,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,719.80 : 520,079.70 = 136,364.60 : x
  2. Step 2: Convert to fraction form
    346,719.80/520,079.70 = 136,364.60/x
  3. Step 3: Cross multiply
    346,719.80x = 520,079.70 × 136,364.60
  4. Step 4: Simplify right side
    346,719.80x = 70,920,460,258.62
  5. Step 5: Solve for x
    x = 70,920,460,258.62/346,719.80
  6. Step 6: Final answer
    x = 204,546.90

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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.