Home / 397,928.12-549,144.13-216,641.31

Finding the Fourth Proportional to 397,928.12, 549,144.13 and 216,641.31

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Solution

The fourth proportional to 397,928.12, 549,144.13 and 216,641.31 is: 298,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,928.12 : 549,144.13 = 216,641.31 : x
  2. Step 2: Convert to fraction form
    397,928.12/549,144.13 = 216,641.31/x
  3. Step 3: Cross multiply
    397,928.12x = 549,144.13 × 216,641.31
  4. Step 4: Simplify right side
    397,928.12x = 118,967,302,618.80
  5. Step 5: Solve for x
    x = 118,967,302,618.80/397,928.12
  6. Step 6: Final answer
    x = 298,966.81

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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.