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Finding the Fourth Proportional to 335,138.80, 469,816.40 and 335,138.80

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Solution

The fourth proportional to 335,138.80, 469,816.40 and 335,138.80 is: 469,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,138.80 : 469,816.40 = 335,138.80 : x
  2. Step 2: Convert to fraction form
    335,138.80/469,816.40 = 335,138.80/x
  3. Step 3: Cross multiply
    335,138.80x = 469,816.40 × 335,138.80
  4. Step 4: Simplify right side
    335,138.80x = 157,453,704,516.32
  5. Step 5: Solve for x
    x = 157,453,704,516.32/335,138.80
  6. Step 6: Final answer
    x = 469,816.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.