Home / 421,905.90-582,230.14-230,919.29

Finding the Fourth Proportional to 421,905.90, 582,230.14 and 230,919.29

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Solution

The fourth proportional to 421,905.90, 582,230.14 and 230,919.29 is: 318,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,905.90 : 582,230.14 = 230,919.29 : x
  2. Step 2: Convert to fraction form
    421,905.90/582,230.14 = 230,919.29/x
  3. Step 3: Cross multiply
    421,905.90x = 582,230.14 × 230,919.29
  4. Step 4: Simplify right side
    421,905.90x = 134,448,168,211.55
  5. Step 5: Solve for x
    x = 134,448,168,211.55/421,905.90
  6. Step 6: Final answer
    x = 318,668.62

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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.