Home / 478,021.78-659,666.46-263,165.50

Finding the Fourth Proportional to 478,021.78, 659,666.46 and 263,165.50

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Solution

The fourth proportional to 478,021.78, 659,666.46 and 263,165.50 is: 363,166.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,021.78 : 659,666.46 = 263,165.50 : x
  2. Step 2: Convert to fraction form
    478,021.78/659,666.46 = 263,165.50/x
  3. Step 3: Cross multiply
    478,021.78x = 659,666.46 × 263,165.50
  4. Step 4: Simplify right side
    478,021.78x = 173,601,453,779.13
  5. Step 5: Solve for x
    x = 173,601,453,779.13/478,021.78
  6. Step 6: Final answer
    x = 363,166.41

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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.