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Finding the Fourth Proportional to 352,538.18, 486,579.40 and 216,643.40

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Solution

The fourth proportional to 352,538.18, 486,579.40 and 216,643.40 is: 299,015.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,538.18 : 486,579.40 = 216,643.40 : x
  2. Step 2: Convert to fraction form
    352,538.18/486,579.40 = 216,643.40/x
  3. Step 3: Cross multiply
    352,538.18x = 486,579.40 × 216,643.40
  4. Step 4: Simplify right side
    352,538.18x = 105,414,215,585.96
  5. Step 5: Solve for x
    x = 105,414,215,585.96/352,538.18
  6. Step 6: Final answer
    x = 299,015.03

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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.