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Finding the Fourth Proportional to 261,405.59, 392,274.12 and 111,646.67

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Solution

The fourth proportional to 261,405.59, 392,274.12 and 111,646.67 is: 167,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,405.59 : 392,274.12 = 111,646.67 : x
  2. Step 2: Convert to fraction form
    261,405.59/392,274.12 = 111,646.67/x
  3. Step 3: Cross multiply
    261,405.59x = 392,274.12 × 111,646.67
  4. Step 4: Simplify right side
    261,405.59x = 43,796,099,225.18
  5. Step 5: Solve for x
    x = 43,796,099,225.18/261,405.59
  6. Step 6: Final answer
    x = 167,540.79

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1.5x scale

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.