Home / 260,212.96-390,032.47-170,218.31

Finding the Fourth Proportional to 260,212.96, 390,032.47 and 170,218.31

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Solution

The fourth proportional to 260,212.96, 390,032.47 and 170,218.31 is: 255,139.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,212.96 : 390,032.47 = 170,218.31 : x
  2. Step 2: Convert to fraction form
    260,212.96/390,032.47 = 170,218.31/x
  3. Step 3: Cross multiply
    260,212.96x = 390,032.47 × 170,218.31
  4. Step 4: Simplify right side
    260,212.96x = 66,390,667,888.53
  5. Step 5: Solve for x
    x = 66,390,667,888.53/260,212.96
  6. Step 6: Final answer
    x = 255,139.74

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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.