Home / 209,216.40-288,784.68-133,765.20

Finding the Fourth Proportional to 209,216.40, 288,784.68 and 133,765.20

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Solution

The fourth proportional to 209,216.40, 288,784.68 and 133,765.20 is: 184,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,216.40 : 288,784.68 = 133,765.20 : x
  2. Step 2: Convert to fraction form
    209,216.40/288,784.68 = 133,765.20/x
  3. Step 3: Cross multiply
    209,216.40x = 288,784.68 × 133,765.20
  4. Step 4: Simplify right side
    209,216.40x = 38,629,340,477.14
  5. Step 5: Solve for x
    x = 38,629,340,477.14/209,216.40
  6. Step 6: Final answer
    x = 184,638.20

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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.