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Finding the Fourth Proportional to 398,148.51, 549,458.13 and 226,073.94

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Solution

The fourth proportional to 398,148.51, 549,458.13 and 226,073.94 is: 311,989.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,148.51 : 549,458.13 = 226,073.94 : x
  2. Step 2: Convert to fraction form
    398,148.51/549,458.13 = 226,073.94/x
  3. Step 3: Cross multiply
    398,148.51x = 549,458.13 × 226,073.94
  4. Step 4: Simplify right side
    398,148.51x = 124,218,163,101.44
  5. Step 5: Solve for x
    x = 124,218,163,101.44/398,148.51
  6. Step 6: Final answer
    x = 311,989.52

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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.