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Finding the Fourth Proportional to 395,482.98, 545,814.46 and 223,408.20

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Solution

The fourth proportional to 395,482.98, 545,814.46 and 223,408.20 is: 308,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,482.98 : 545,814.46 = 223,408.20 : x
  2. Step 2: Convert to fraction form
    395,482.98/545,814.46 = 223,408.20/x
  3. Step 3: Cross multiply
    395,482.98x = 545,814.46 × 223,408.20
  4. Step 4: Simplify right side
    395,482.98x = 121,939,426,042.57
  5. Step 5: Solve for x
    x = 121,939,426,042.57/395,482.98
  6. Step 6: Final answer
    x = 308,330.40

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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.