Home / 355,030.30-489,887.67-211,790.62

Finding the Fourth Proportional to 355,030.30, 489,887.67 and 211,790.62

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Solution

The fourth proportional to 355,030.30, 489,887.67 and 211,790.62 is: 292,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,030.30 : 489,887.67 = 211,790.62 : x
  2. Step 2: Convert to fraction form
    355,030.30/489,887.67 = 211,790.62/x
  3. Step 3: Cross multiply
    355,030.30x = 489,887.67 × 211,790.62
  4. Step 4: Simplify right side
    355,030.30x = 103,753,613,359.66
  5. Step 5: Solve for x
    x = 103,753,613,359.66/355,030.30
  6. Step 6: Final answer
    x = 292,238.76

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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.