Home / 290,287.13-435,458.21-112,807.85

Finding the Fourth Proportional to 290,287.13, 435,458.21 and 112,807.85

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Solution

The fourth proportional to 290,287.13, 435,458.21 and 112,807.85 is: 169,222.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,287.13 : 435,458.21 = 112,807.85 : x
  2. Step 2: Convert to fraction form
    290,287.13/435,458.21 = 112,807.85/x
  3. Step 3: Cross multiply
    290,287.13x = 435,458.21 × 112,807.85
  4. Step 4: Simplify right side
    290,287.13x = 49,123,101,693.62
  5. Step 5: Solve for x
    x = 49,123,101,693.62/290,287.13
  6. Step 6: Final answer
    x = 169,222.46

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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.