Home / 490,021.28-734,565.36-157,364

Finding the Fourth Proportional to 490,021.28, 734,565.36 and 157,364

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Solution

The fourth proportional to 490,021.28, 734,565.36 and 157,364 is: 235,896.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,021.28 : 734,565.36 = 157,364 : x
  2. Step 2: Convert to fraction form
    490,021.28/734,565.36 = 157,364/x
  3. Step 3: Cross multiply
    490,021.28x = 734,565.36 × 157,364
  4. Step 4: Simplify right side
    490,021.28x = 115,594,143,311.04
  5. Step 5: Solve for x
    x = 115,594,143,311.04/490,021.28
  6. Step 6: Final answer
    x = 235,896.17

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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.