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Finding the Fourth Proportional to 398,639.34, 549,675.37 and 325,816.24

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Solution

The fourth proportional to 398,639.34, 549,675.37 and 325,816.24 is: 449,261.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,639.34 : 549,675.37 = 325,816.24 : x
  2. Step 2: Convert to fraction form
    398,639.34/549,675.37 = 325,816.24/x
  3. Step 3: Cross multiply
    398,639.34x = 549,675.37 × 325,816.24
  4. Step 4: Simplify right side
    398,639.34x = 179,093,162,274.01
  5. Step 5: Solve for x
    x = 179,093,162,274.01/398,639.34
  6. Step 6: Final answer
    x = 449,261.13

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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.