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Finding the Fourth Proportional to 290,358.04, 435,539.22 and 80,007.52

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Solution

The fourth proportional to 290,358.04, 435,539.22 and 80,007.52 is: 120,011.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,358.04 : 435,539.22 = 80,007.52 : x
  2. Step 2: Convert to fraction form
    290,358.04/435,539.22 = 80,007.52/x
  3. Step 3: Cross multiply
    290,358.04x = 435,539.22 × 80,007.52
  4. Step 4: Simplify right side
    290,358.04x = 34,846,412,854.93
  5. Step 5: Solve for x
    x = 34,846,412,854.93/290,358.04
  6. Step 6: Final answer
    x = 120,011.88

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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.