Home / 259,539.36-389,289.60-72,565.44

Finding the Fourth Proportional to 259,539.36, 389,289.60 and 72,565.44

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Solution

The fourth proportional to 259,539.36, 389,289.60 and 72,565.44 is: 108,842.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,539.36 : 389,289.60 = 72,565.44 : x
  2. Step 2: Convert to fraction form
    259,539.36/389,289.60 = 72,565.44/x
  3. Step 3: Cross multiply
    259,539.36x = 389,289.60 × 72,565.44
  4. Step 4: Simplify right side
    259,539.36x = 28,248,971,111.42
  5. Step 5: Solve for x
    x = 28,248,971,111.42/259,539.36
  6. Step 6: Final answer
    x = 108,842.72

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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.