Home / 401,288.80-553,778.40-219,996.84

Finding the Fourth Proportional to 401,288.80, 553,778.40 and 219,996.84

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Solution

The fourth proportional to 401,288.80, 553,778.40 and 219,996.84 is: 303,595.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,288.80 : 553,778.40 = 219,996.84 : x
  2. Step 2: Convert to fraction form
    401,288.80/553,778.40 = 219,996.84/x
  3. Step 3: Cross multiply
    401,288.80x = 553,778.40 × 219,996.84
  4. Step 4: Simplify right side
    401,288.80x = 121,829,494,433.19
  5. Step 5: Solve for x
    x = 121,829,494,433.19/401,288.80
  6. Step 6: Final answer
    x = 303,595.55

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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.