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Finding the Fourth Proportional to 290,544.88, 435,842.40 and 80,182.80

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Solution

The fourth proportional to 290,544.88, 435,842.40 and 80,182.80 is: 120,281.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,544.88 : 435,842.40 = 80,182.80 : x
  2. Step 2: Convert to fraction form
    290,544.88/435,842.40 = 80,182.80/x
  3. Step 3: Cross multiply
    290,544.88x = 435,842.40 × 80,182.80
  4. Step 4: Simplify right side
    290,544.88x = 34,947,063,990.72
  5. Step 5: Solve for x
    x = 34,947,063,990.72/290,544.88
  6. Step 6: Final answer
    x = 120,281.12

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1.5x scale

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.