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Finding the Fourth Proportional to 398,219.82, 549,536.99 and 216,933.92

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Solution

The fourth proportional to 398,219.82, 549,536.99 and 216,933.92 is: 299,365.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,219.82 : 549,536.99 = 216,933.92 : x
  2. Step 2: Convert to fraction form
    398,219.82/549,536.99 = 216,933.92/x
  3. Step 3: Cross multiply
    398,219.82x = 549,536.99 × 216,933.92
  4. Step 4: Simplify right side
    398,219.82x = 119,213,213,425.70
  5. Step 5: Solve for x
    x = 119,213,213,425.70/398,219.82
  6. Step 6: Final answer
    x = 299,365.34

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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.