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Finding the Fourth Proportional to 358,738.20, 537,912.90 and 148,138.20

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Solution

The fourth proportional to 358,738.20, 537,912.90 and 148,138.20 is: 222,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,738.20 : 537,912.90 = 148,138.20 : x
  2. Step 2: Convert to fraction form
    358,738.20/537,912.90 = 148,138.20/x
  3. Step 3: Cross multiply
    358,738.20x = 537,912.90 × 148,138.20
  4. Step 4: Simplify right side
    358,738.20x = 79,685,448,762.78
  5. Step 5: Solve for x
    x = 79,685,448,762.78/358,738.20
  6. Step 6: Final answer
    x = 222,127.02

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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.