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Finding the Fourth Proportional to 253,314.15, 380,075.85 and 111,085.80

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Solution

The fourth proportional to 253,314.15, 380,075.85 and 111,085.80 is: 166,674.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,314.15 : 380,075.85 = 111,085.80 : x
  2. Step 2: Convert to fraction form
    253,314.15/380,075.85 = 111,085.80/x
  3. Step 3: Cross multiply
    253,314.15x = 380,075.85 × 111,085.80
  4. Step 4: Simplify right side
    253,314.15x = 42,221,029,857.93
  5. Step 5: Solve for x
    x = 42,221,029,857.93/253,314.15
  6. Step 6: Final answer
    x = 166,674.58

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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.