Home / 309,913.60-427,500.64-195,147.24

Finding the Fourth Proportional to 309,913.60, 427,500.64 and 195,147.24

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Solution

The fourth proportional to 309,913.60, 427,500.64 and 195,147.24 is: 269,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,913.60 : 427,500.64 = 195,147.24 : x
  2. Step 2: Convert to fraction form
    309,913.60/427,500.64 = 195,147.24/x
  3. Step 3: Cross multiply
    309,913.60x = 427,500.64 × 195,147.24
  4. Step 4: Simplify right side
    309,913.60x = 83,425,569,994.23
  5. Step 5: Solve for x
    x = 83,425,569,994.23/309,913.60
  6. Step 6: Final answer
    x = 269,189.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.