Home / 397,921.95-549,114.39-216,629.28

Finding the Fourth Proportional to 397,921.95, 549,114.39 and 216,629.28

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Solution

The fourth proportional to 397,921.95, 549,114.39 and 216,629.28 is: 298,938.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,921.95 : 549,114.39 = 216,629.28 : x
  2. Step 2: Convert to fraction form
    397,921.95/549,114.39 = 216,629.28/x
  3. Step 3: Cross multiply
    397,921.95x = 549,114.39 × 216,629.28
  4. Step 4: Simplify right side
    397,921.95x = 118,954,254,943.34
  5. Step 5: Solve for x
    x = 118,954,254,943.34/397,921.95
  6. Step 6: Final answer
    x = 298,938.66

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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.