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Finding the Fourth Proportional to 355,461.72, 490,254.83 and 268,536.67

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Solution

The fourth proportional to 355,461.72, 490,254.83 and 268,536.67 is: 370,367.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,461.72 : 490,254.83 = 268,536.67 : x
  2. Step 2: Convert to fraction form
    355,461.72/490,254.83 = 268,536.67/x
  3. Step 3: Cross multiply
    355,461.72x = 490,254.83 × 268,536.67
  4. Step 4: Simplify right side
    355,461.72x = 131,651,397,938.31
  5. Step 5: Solve for x
    x = 131,651,397,938.31/355,461.72
  6. Step 6: Final answer
    x = 370,367.31

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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.