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Finding the Fourth Proportional to 253,313.65, 380,075.10 and 111,085.30

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Solution

The fourth proportional to 253,313.65, 380,075.10 and 111,085.30 is: 166,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,313.65 : 380,075.10 = 111,085.30 : x
  2. Step 2: Convert to fraction form
    253,313.65/380,075.10 = 111,085.30/x
  3. Step 3: Cross multiply
    253,313.65x = 380,075.10 × 111,085.30
  4. Step 4: Simplify right side
    253,313.65x = 42,220,756,506.03
  5. Step 5: Solve for x
    x = 42,220,756,506.03/253,313.65
  6. Step 6: Final answer
    x = 166,673.83

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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.