Home / 355,749.08-490,945.37-202,784.50

Finding the Fourth Proportional to 355,749.08, 490,945.37 and 202,784.50

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Solution

The fourth proportional to 355,749.08, 490,945.37 and 202,784.50 is: 279,849.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,749.08 : 490,945.37 = 202,784.50 : x
  2. Step 2: Convert to fraction form
    355,749.08/490,945.37 = 202,784.50/x
  3. Step 3: Cross multiply
    355,749.08x = 490,945.37 × 202,784.50
  4. Step 4: Simplify right side
    355,749.08x = 99,556,111,382.77
  5. Step 5: Solve for x
    x = 99,556,111,382.77/355,749.08
  6. Step 6: Final answer
    x = 279,849.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.