Home / 253,436.03-380,285.09-111,380.98

Finding the Fourth Proportional to 253,436.03, 380,285.09 and 111,380.98

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Solution

The fourth proportional to 253,436.03, 380,285.09 and 111,380.98 is: 167,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,436.03 : 380,285.09 = 111,380.98 : x
  2. Step 2: Convert to fraction form
    253,436.03/380,285.09 = 111,380.98/x
  3. Step 3: Cross multiply
    253,436.03x = 380,285.09 × 111,380.98
  4. Step 4: Simplify right side
    253,436.03x = 42,356,527,322.75
  5. Step 5: Solve for x
    x = 42,356,527,322.75/253,436.03
  6. Step 6: Final answer
    x = 167,129.07

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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.