Home / 290,623.83-435,943.95-80,261.79

Finding the Fourth Proportional to 290,623.83, 435,943.95 and 80,261.79

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Solution

The fourth proportional to 290,623.83, 435,943.95 and 80,261.79 is: 120,394.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,623.83 : 435,943.95 = 80,261.79 : x
  2. Step 2: Convert to fraction form
    290,623.83/435,943.95 = 80,261.79/x
  3. Step 3: Cross multiply
    290,623.83x = 435,943.95 × 80,261.79
  4. Step 4: Simplify right side
    290,623.83x = 34,989,641,766.67
  5. Step 5: Solve for x
    x = 34,989,641,766.67/290,623.83
  6. Step 6: Final answer
    x = 120,394.95

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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.