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Finding the Fourth Proportional to 261,479.17, 392,224.20 and 74,490.67

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Solution

The fourth proportional to 261,479.17, 392,224.20 and 74,490.67 is: 111,737.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,479.17 : 392,224.20 = 74,490.67 : x
  2. Step 2: Convert to fraction form
    261,479.17/392,224.20 = 74,490.67/x
  3. Step 3: Cross multiply
    261,479.17x = 392,224.20 × 74,490.67
  4. Step 4: Simplify right side
    261,479.17x = 29,217,043,448.21
  5. Step 5: Solve for x
    x = 29,217,043,448.21/261,479.17
  6. Step 6: Final answer
    x = 111,737.56

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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.