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Finding the Fourth Proportional to 401,970.56, 554,720.90 and 220,701.06

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Solution

The fourth proportional to 401,970.56, 554,720.90 and 220,701.06 is: 304,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,970.56 : 554,720.90 = 220,701.06 : x
  2. Step 2: Convert to fraction form
    401,970.56/554,720.90 = 220,701.06/x
  3. Step 3: Cross multiply
    401,970.56x = 554,720.90 × 220,701.06
  4. Step 4: Simplify right side
    401,970.56x = 122,427,489,530.65
  5. Step 5: Solve for x
    x = 122,427,489,530.65/401,970.56
  6. Step 6: Final answer
    x = 304,568.30

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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.