Home / 260,333.55-390,054.54-142,087.86

Finding the Fourth Proportional to 260,333.55, 390,054.54 and 142,087.86

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Solution

The fourth proportional to 260,333.55, 390,054.54 and 142,087.86 is: 212,888.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,333.55 : 390,054.54 = 142,087.86 : x
  2. Step 2: Convert to fraction form
    260,333.55/390,054.54 = 142,087.86/x
  3. Step 3: Cross multiply
    260,333.55x = 390,054.54 × 142,087.86
  4. Step 4: Simplify right side
    260,333.55x = 55,422,014,871.88
  5. Step 5: Solve for x
    x = 55,422,014,871.88/260,333.55
  6. Step 6: Final answer
    x = 212,888.48

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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.