Home / 371,135.52-512,166.96-209,986.92

Finding the Fourth Proportional to 371,135.52, 512,166.96 and 209,986.92

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Solution

The fourth proportional to 371,135.52, 512,166.96 and 209,986.92 is: 289,781.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,135.52 : 512,166.96 = 209,986.92 : x
  2. Step 2: Convert to fraction form
    371,135.52/512,166.96 = 209,986.92/x
  3. Step 3: Cross multiply
    371,135.52x = 512,166.96 × 209,986.92
  4. Step 4: Simplify right side
    371,135.52x = 107,548,362,456.16
  5. Step 5: Solve for x
    x = 107,548,362,456.16/371,135.52
  6. Step 6: Final answer
    x = 289,781.92

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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.