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Finding the Fourth Proportional to 401,033.60, 553,424.64 and 219,744.80

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Solution

The fourth proportional to 401,033.60, 553,424.64 and 219,744.80 is: 303,246.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,033.60 : 553,424.64 = 219,744.80 : x
  2. Step 2: Convert to fraction form
    401,033.60/553,424.64 = 219,744.80/x
  3. Step 3: Cross multiply
    401,033.60x = 553,424.64 × 219,744.80
  4. Step 4: Simplify right side
    401,033.60x = 121,612,186,831.87
  5. Step 5: Solve for x
    x = 121,612,186,831.87/401,033.60
  6. Step 6: Final answer
    x = 303,246.88

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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.