Home / 261,396.21-392,113.06-109,440.38

Finding the Fourth Proportional to 261,396.21, 392,113.06 and 109,440.38

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Solution

The fourth proportional to 261,396.21, 392,113.06 and 109,440.38 is: 164,168.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,396.21 : 392,113.06 = 109,440.38 : x
  2. Step 2: Convert to fraction form
    261,396.21/392,113.06 = 109,440.38/x
  3. Step 3: Cross multiply
    261,396.21x = 392,113.06 × 109,440.38
  4. Step 4: Simplify right side
    261,396.21x = 42,913,000,944.31
  5. Step 5: Solve for x
    x = 42,913,000,944.31/261,396.21
  6. Step 6: Final answer
    x = 164,168.41

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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.