Home / 290,089.21-400,330-162,774.22

Finding the Fourth Proportional to 290,089.21, 400,330 and 162,774.22

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Solution

The fourth proportional to 290,089.21, 400,330 and 162,774.22 is: 224,632.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,089.21 : 400,330 = 162,774.22 : x
  2. Step 2: Convert to fraction form
    290,089.21/400,330 = 162,774.22/x
  3. Step 3: Cross multiply
    290,089.21x = 400,330 × 162,774.22
  4. Step 4: Simplify right side
    290,089.21x = 65,163,401,490.95
  5. Step 5: Solve for x
    x = 65,163,401,490.95/290,089.21
  6. Step 6: Final answer
    x = 224,632.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.