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Finding the Fourth Proportional to 346,813.70, 520,090.95 and 136,408.10

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Solution

The fourth proportional to 346,813.70, 520,090.95 and 136,408.10 is: 204,561.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,813.70 : 520,090.95 = 136,408.10 : x
  2. Step 2: Convert to fraction form
    346,813.70/520,090.95 = 136,408.10/x
  3. Step 3: Cross multiply
    346,813.70x = 520,090.95 × 136,408.10
  4. Step 4: Simplify right side
    346,813.70x = 70,944,618,316.70
  5. Step 5: Solve for x
    x = 70,944,618,316.70/346,813.70
  6. Step 6: Final answer
    x = 204,561.18

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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.