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Finding the Fourth Proportional to 397,866.54, 549,054.27 and 216,588.54

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Solution

The fourth proportional to 397,866.54, 549,054.27 and 216,588.54 is: 298,891.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,866.54 : 549,054.27 = 216,588.54 : x
  2. Step 2: Convert to fraction form
    397,866.54/549,054.27 = 216,588.54/x
  3. Step 3: Cross multiply
    397,866.54x = 549,054.27 × 216,588.54
  4. Step 4: Simplify right side
    397,866.54x = 118,918,862,720.07
  5. Step 5: Solve for x
    x = 118,918,862,720.07/397,866.54
  6. Step 6: Final answer
    x = 298,891.34

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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.