Home / 289,166.32-399,279-192,463.12

Finding the Fourth Proportional to 289,166.32, 399,279 and 192,463.12

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Solution

The fourth proportional to 289,166.32, 399,279 and 192,463.12 is: 265,751.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,166.32 : 399,279 = 192,463.12 : x
  2. Step 2: Convert to fraction form
    289,166.32/399,279 = 192,463.12/x
  3. Step 3: Cross multiply
    289,166.32x = 399,279 × 192,463.12
  4. Step 4: Simplify right side
    289,166.32x = 76,846,482,090.48
  5. Step 5: Solve for x
    x = 76,846,482,090.48/289,166.32
  6. Step 6: Final answer
    x = 265,751.84

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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.