Home / 260,460.72-390,750-82,977.84

Finding the Fourth Proportional to 260,460.72, 390,750 and 82,977.84

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Solution

The fourth proportional to 260,460.72, 390,750 and 82,977.84 is: 124,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,460.72 : 390,750 = 82,977.84 : x
  2. Step 2: Convert to fraction form
    260,460.72/390,750 = 82,977.84/x
  3. Step 3: Cross multiply
    260,460.72x = 390,750 × 82,977.84
  4. Step 4: Simplify right side
    260,460.72x = 32,423,590,980
  5. Step 5: Solve for x
    x = 32,423,590,980/260,460.72
  6. Step 6: Final answer
    x = 124,485.53

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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.