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Finding the Fourth Proportional to 401,461.50, 554,016.87 and 222,613.50

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Solution

The fourth proportional to 401,461.50, 554,016.87 and 222,613.50 is: 307,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,461.50 : 554,016.87 = 222,613.50 : x
  2. Step 2: Convert to fraction form
    401,461.50/554,016.87 = 222,613.50/x
  3. Step 3: Cross multiply
    401,461.50x = 554,016.87 × 222,613.50
  4. Step 4: Simplify right side
    401,461.50x = 123,331,634,489.75
  5. Step 5: Solve for x
    x = 123,331,634,489.75/401,461.50
  6. Step 6: Final answer
    x = 307,206.63

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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.