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Finding the Fourth Proportional to 353,399.40, 493,709.40 and 353,399.40

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Solution

The fourth proportional to 353,399.40, 493,709.40 and 353,399.40 is: 493,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,399.40 : 493,709.40 = 353,399.40 : x
  2. Step 2: Convert to fraction form
    353,399.40/493,709.40 = 353,399.40/x
  3. Step 3: Cross multiply
    353,399.40x = 493,709.40 × 353,399.40
  4. Step 4: Simplify right side
    353,399.40x = 174,476,605,734.36
  5. Step 5: Solve for x
    x = 174,476,605,734.36/353,399.40
  6. Step 6: Final answer
    x = 493,709.40

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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.