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Finding the Fourth Proportional to 400,960.50, 553,325.49 and 222,112.50

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Solution

The fourth proportional to 400,960.50, 553,325.49 and 222,112.50 is: 306,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,960.50 : 553,325.49 = 222,112.50 : x
  2. Step 2: Convert to fraction form
    400,960.50/553,325.49 = 222,112.50/x
  3. Step 3: Cross multiply
    400,960.50x = 553,325.49 × 222,112.50
  4. Step 4: Simplify right side
    400,960.50x = 122,900,507,897.63
  5. Step 5: Solve for x
    x = 122,900,507,897.63/400,960.50
  6. Step 6: Final answer
    x = 306,515.25

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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.