Home / 400,979.86-553,352.20-219,698.66

Finding the Fourth Proportional to 400,979.86, 553,352.20 and 219,698.66

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Solution

The fourth proportional to 400,979.86, 553,352.20 and 219,698.66 is: 303,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,979.86 : 553,352.20 = 219,698.66 : x
  2. Step 2: Convert to fraction form
    400,979.86/553,352.20 = 219,698.66/x
  3. Step 3: Cross multiply
    400,979.86x = 553,352.20 × 219,698.66
  4. Step 4: Simplify right side
    400,979.86x = 121,570,736,848.05
  5. Step 5: Solve for x
    x = 121,570,736,848.05/400,979.86
  6. Step 6: Final answer
    x = 303,184.15

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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.