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Finding the Fourth Proportional to 300,678.87, 451,017.99 and 123,186.20

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Solution

The fourth proportional to 300,678.87, 451,017.99 and 123,186.20 is: 184,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,678.87 : 451,017.99 = 123,186.20 : x
  2. Step 2: Convert to fraction form
    300,678.87/451,017.99 = 123,186.20/x
  3. Step 3: Cross multiply
    300,678.87x = 451,017.99 × 123,186.20
  4. Step 4: Simplify right side
    300,678.87x = 55,559,192,319.74
  5. Step 5: Solve for x
    x = 55,559,192,319.74/300,678.87
  6. Step 6: Final answer
    x = 184,779.17

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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.