Home / 398,280.12-549,578.16-226,135.32

Finding the Fourth Proportional to 398,280.12, 549,578.16 and 226,135.32

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Solution

The fourth proportional to 398,280.12, 549,578.16 and 226,135.32 is: 312,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,280.12 : 549,578.16 = 226,135.32 : x
  2. Step 2: Convert to fraction form
    398,280.12/549,578.16 = 226,135.32/x
  3. Step 3: Cross multiply
    398,280.12x = 549,578.16 × 226,135.32
  4. Step 4: Simplify right side
    398,280.12x = 124,279,033,076.61
  5. Step 5: Solve for x
    x = 124,279,033,076.61/398,280.12
  6. Step 6: Final answer
    x = 312,039.26

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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.