Home / 398,436.21-549,825.93-217,144.26

Finding the Fourth Proportional to 398,436.21, 549,825.93 and 217,144.26

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Solution

The fourth proportional to 398,436.21, 549,825.93 and 217,144.26 is: 299,650.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,436.21 : 549,825.93 = 217,144.26 : x
  2. Step 2: Convert to fraction form
    398,436.21/549,825.93 = 217,144.26/x
  3. Step 3: Cross multiply
    398,436.21x = 549,825.93 × 217,144.26
  4. Step 4: Simplify right side
    398,436.21x = 119,391,544,698.66
  5. Step 5: Solve for x
    x = 119,391,544,698.66/398,436.21
  6. Step 6: Final answer
    x = 299,650.34

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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.