Home / 397,830.87-549,018.27-216,554.63

Finding the Fourth Proportional to 397,830.87, 549,018.27 and 216,554.63

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Solution

The fourth proportional to 397,830.87, 549,018.27 and 216,554.63 is: 298,851.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,830.87 : 549,018.27 = 216,554.63 : x
  2. Step 2: Convert to fraction form
    397,830.87/549,018.27 = 216,554.63/x
  3. Step 3: Cross multiply
    397,830.87x = 549,018.27 × 216,554.63
  4. Step 4: Simplify right side
    397,830.87x = 118,892,445,578.00
  5. Step 5: Solve for x
    x = 118,892,445,578.00/397,830.87
  6. Step 6: Final answer
    x = 298,851.73

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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.