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Finding the Fourth Proportional to 353,339.55, 487,695.18 and 200,467.22

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Solution

The fourth proportional to 353,339.55, 487,695.18 and 200,467.22 is: 276,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,339.55 : 487,695.18 = 200,467.22 : x
  2. Step 2: Convert to fraction form
    353,339.55/487,695.18 = 200,467.22/x
  3. Step 3: Cross multiply
    353,339.55x = 487,695.18 × 200,467.22
  4. Step 4: Simplify right side
    353,339.55x = 97,766,899,168.24
  5. Step 5: Solve for x
    x = 97,766,899,168.24/353,339.55
  6. Step 6: Final answer
    x = 276,693.90

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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.