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Finding the Fourth Proportional to 421,959.19, 582,343.28 and 252,189.67

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Solution

The fourth proportional to 421,959.19, 582,343.28 and 252,189.67 is: 348,045.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,959.19 : 582,343.28 = 252,189.67 : x
  2. Step 2: Convert to fraction form
    421,959.19/582,343.28 = 252,189.67/x
  3. Step 3: Cross multiply
    421,959.19x = 582,343.28 × 252,189.67
  4. Step 4: Simplify right side
    421,959.19x = 146,860,959,609.92
  5. Step 5: Solve for x
    x = 146,860,959,609.92/421,959.19
  6. Step 6: Final answer
    x = 348,045.41

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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.