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Finding the Fourth Proportional to 401,421.51, 553,974.50 and 220,133.00

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Solution

The fourth proportional to 401,421.51, 553,974.50 and 220,133.00 is: 303,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,421.51 : 553,974.50 = 220,133.00 : x
  2. Step 2: Convert to fraction form
    401,421.51/553,974.50 = 220,133.00/x
  3. Step 3: Cross multiply
    401,421.51x = 553,974.50 × 220,133.00
  4. Step 4: Simplify right side
    401,421.51x = 121,948,070,755.95
  5. Step 5: Solve for x
    x = 121,948,070,755.95/401,421.51
  6. Step 6: Final answer
    x = 303,790.58

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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.