Home / 390,226.67-585,441-120,348.84

Finding the Fourth Proportional to 390,226.67, 585,441 and 120,348.84

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Solution

The fourth proportional to 390,226.67, 585,441 and 120,348.84 is: 180,554.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,226.67 : 585,441 = 120,348.84 : x
  2. Step 2: Convert to fraction form
    390,226.67/585,441 = 120,348.84/x
  3. Step 3: Cross multiply
    390,226.67x = 585,441 × 120,348.84
  4. Step 4: Simplify right side
    390,226.67x = 70,457,145,238.44
  5. Step 5: Solve for x
    x = 70,457,145,238.44/390,226.67
  6. Step 6: Final answer
    x = 180,554.41

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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.