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Finding the Fourth Proportional to 401,409.39, 553,952.55 and 220,110.50

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Solution

The fourth proportional to 401,409.39, 553,952.55 and 220,110.50 is: 303,756.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,409.39 : 553,952.55 = 220,110.50 : x
  2. Step 2: Convert to fraction form
    401,409.39/553,952.55 = 220,110.50/x
  3. Step 3: Cross multiply
    401,409.39x = 553,952.55 × 220,110.50
  4. Step 4: Simplify right side
    401,409.39x = 121,930,774,967.07
  5. Step 5: Solve for x
    x = 121,930,774,967.07/401,409.39
  6. Step 6: Final answer
    x = 303,756.66

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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.