Home / 397,930.47-549,147.36-216,643.65

Finding the Fourth Proportional to 397,930.47, 549,147.36 and 216,643.65

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Solution

The fourth proportional to 397,930.47, 549,147.36 and 216,643.65 is: 298,970.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,930.47 : 549,147.36 = 216,643.65 : x
  2. Step 2: Convert to fraction form
    397,930.47/549,147.36 = 216,643.65/x
  3. Step 3: Cross multiply
    397,930.47x = 549,147.36 × 216,643.65
  4. Step 4: Simplify right side
    397,930.47x = 118,969,288,458.26
  5. Step 5: Solve for x
    x = 118,969,288,458.26/397,930.47
  6. Step 6: Final answer
    x = 298,970.04

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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.