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Finding the Fourth Proportional to 253,445, 379,851.48 and 221,779.86

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Solution

The fourth proportional to 253,445, 379,851.48 and 221,779.86 is: 332,393.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,445 : 379,851.48 = 221,779.86 : x
  2. Step 2: Convert to fraction form
    253,445/379,851.48 = 221,779.86/x
  3. Step 3: Cross multiply
    253,445x = 379,851.48 × 221,779.86
  4. Step 4: Simplify right side
    253,445x = 84,243,408,055.19
  5. Step 5: Solve for x
    x = 84,243,408,055.19/253,445
  6. Step 6: Final answer
    x = 332,393.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.