Home / 280,945.72-421,221.61-103,429.63

Finding the Fourth Proportional to 280,945.72, 421,221.61 and 103,429.63

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Solution

The fourth proportional to 280,945.72, 421,221.61 and 103,429.63 is: 155,071.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,945.72 : 421,221.61 = 103,429.63 : x
  2. Step 2: Convert to fraction form
    280,945.72/421,221.61 = 103,429.63/x
  3. Step 3: Cross multiply
    280,945.72x = 421,221.61 × 103,429.63
  4. Step 4: Simplify right side
    280,945.72x = 43,566,795,270.30
  5. Step 5: Solve for x
    x = 43,566,795,270.30/280,945.72
  6. Step 6: Final answer
    x = 155,071.93

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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.