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Finding the Fourth Proportional to 313,603.10, 470,447.85 and 136,105.10

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Solution

The fourth proportional to 313,603.10, 470,447.85 and 136,105.10 is: 204,176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,603.10 : 470,447.85 = 136,105.10 : x
  2. Step 2: Convert to fraction form
    313,603.10/470,447.85 = 136,105.10/x
  3. Step 3: Cross multiply
    313,603.10x = 470,447.85 × 136,105.10
  4. Step 4: Simplify right side
    313,603.10x = 64,030,351,669.04
  5. Step 5: Solve for x
    x = 64,030,351,669.04/313,603.10
  6. Step 6: Final answer
    x = 204,176.40

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1.5x scale

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.