Home / 400,913.12-553,258.48-219,624.79

Finding the Fourth Proportional to 400,913.12, 553,258.48 and 219,624.79

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Solution

The fourth proportional to 400,913.12, 553,258.48 and 219,624.79 is: 303,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,913.12 : 553,258.48 = 219,624.79 : x
  2. Step 2: Convert to fraction form
    400,913.12/553,258.48 = 219,624.79/x
  3. Step 3: Cross multiply
    400,913.12x = 553,258.48 × 219,624.79
  4. Step 4: Simplify right side
    400,913.12x = 121,509,277,485.72
  5. Step 5: Solve for x
    x = 121,509,277,485.72/400,913.12
  6. Step 6: Final answer
    x = 303,081.32

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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.