Home / 397,820.16-549,018-228,057.12

Finding the Fourth Proportional to 397,820.16, 549,018 and 228,057.12

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Solution

The fourth proportional to 397,820.16, 549,018 and 228,057.12 is: 314,733.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,820.16 : 549,018 = 228,057.12 : x
  2. Step 2: Convert to fraction form
    397,820.16/549,018 = 228,057.12/x
  3. Step 3: Cross multiply
    397,820.16x = 549,018 × 228,057.12
  4. Step 4: Simplify right side
    397,820.16x = 125,207,463,908.16
  5. Step 5: Solve for x
    x = 125,207,463,908.16/397,820.16
  6. Step 6: Final answer
    x = 314,733.83

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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.