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Finding the Fourth Proportional to 346,765.25, 520,443.12 and 136,550.81

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Solution

The fourth proportional to 346,765.25, 520,443.12 and 136,550.81 is: 204,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,765.25 : 520,443.12 = 136,550.81 : x
  2. Step 2: Convert to fraction form
    346,765.25/520,443.12 = 136,550.81/x
  3. Step 3: Cross multiply
    346,765.25x = 520,443.12 × 136,550.81
  4. Step 4: Simplify right side
    346,765.25x = 71,066,931,408.10
  5. Step 5: Solve for x
    x = 71,066,931,408.10/346,765.25
  6. Step 6: Final answer
    x = 204,942.48

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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.