Home / 280,292.71-420,189.07-102,758.33

Finding the Fourth Proportional to 280,292.71, 420,189.07 and 102,758.33

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Solution

The fourth proportional to 280,292.71, 420,189.07 and 102,758.33 is: 154,045.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,292.71 : 420,189.07 = 102,758.33 : x
  2. Step 2: Convert to fraction form
    280,292.71/420,189.07 = 102,758.33/x
  3. Step 3: Cross multiply
    280,292.71x = 420,189.07 × 102,758.33
  4. Step 4: Simplify right side
    280,292.71x = 43,177,927,117.45
  5. Step 5: Solve for x
    x = 43,177,927,117.45/280,292.71
  6. Step 6: Final answer
    x = 154,045.84

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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.