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Finding the Fourth Proportional to 346,809.60, 520,003.20 and 136,195.20

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Solution

The fourth proportional to 346,809.60, 520,003.20 and 136,195.20 is: 204,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,809.60 : 520,003.20 = 136,195.20 : x
  2. Step 2: Convert to fraction form
    346,809.60/520,003.20 = 136,195.20/x
  3. Step 3: Cross multiply
    346,809.60x = 520,003.20 × 136,195.20
  4. Step 4: Simplify right side
    346,809.60x = 70,821,939,824.64
  5. Step 5: Solve for x
    x = 70,821,939,824.64/346,809.60
  6. Step 6: Final answer
    x = 204,209.86

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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.