Home / 400,965.44-553,332-219,688.68

Finding the Fourth Proportional to 400,965.44, 553,332 and 219,688.68

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Solution

The fourth proportional to 400,965.44, 553,332 and 219,688.68 is: 303,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,965.44 : 553,332 = 219,688.68 : x
  2. Step 2: Convert to fraction form
    400,965.44/553,332 = 219,688.68/x
  3. Step 3: Cross multiply
    400,965.44x = 553,332 × 219,688.68
  4. Step 4: Simplify right side
    400,965.44x = 121,560,776,681.76
  5. Step 5: Solve for x
    x = 121,560,776,681.76/400,965.44
  6. Step 6: Final answer
    x = 303,170.21

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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.