Home / 400,911.47-553,258-219,629.96

Finding the Fourth Proportional to 400,911.47, 553,258 and 219,629.96

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Solution

The fourth proportional to 400,911.47, 553,258 and 219,629.96 is: 303,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,911.47 : 553,258 = 219,629.96 : x
  2. Step 2: Convert to fraction form
    400,911.47/553,258 = 219,629.96/x
  3. Step 3: Cross multiply
    400,911.47x = 553,258 × 219,629.96
  4. Step 4: Simplify right side
    400,911.47x = 121,512,032,409.68
  5. Step 5: Solve for x
    x = 121,512,032,409.68/400,911.47
  6. Step 6: Final answer
    x = 303,089.44

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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.