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Finding the Fourth Proportional to 401,605.39, 554,217.48 and 220,334.07

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Solution

The fourth proportional to 401,605.39, 554,217.48 and 220,334.07 is: 304,062.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,605.39 : 554,217.48 = 220,334.07 : x
  2. Step 2: Convert to fraction form
    401,605.39/554,217.48 = 220,334.07/x
  3. Step 3: Cross multiply
    401,605.39x = 554,217.48 × 220,334.07
  4. Step 4: Simplify right side
    401,605.39x = 122,112,991,931.87
  5. Step 5: Solve for x
    x = 122,112,991,931.87/401,605.39
  6. Step 6: Final answer
    x = 304,062.14

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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.