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Finding the Fourth Proportional to 401,297.51, 553,775.86 and 220,005.47

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Solution

The fourth proportional to 401,297.51, 553,775.86 and 220,005.47 is: 303,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,297.51 : 553,775.86 = 220,005.47 : x
  2. Step 2: Convert to fraction form
    401,297.51/553,775.86 = 220,005.47/x
  3. Step 3: Cross multiply
    401,297.51x = 553,775.86 × 220,005.47
  4. Step 4: Simplify right side
    401,297.51x = 121,833,715,660.88
  5. Step 5: Solve for x
    x = 121,833,715,660.88/401,297.51
  6. Step 6: Final answer
    x = 303,599.48

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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.