Home / 400,931.37-553,284.27-219,643.65

Finding the Fourth Proportional to 400,931.37, 553,284.27 and 219,643.65

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Solution

The fourth proportional to 400,931.37, 553,284.27 and 219,643.65 is: 303,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,931.37 : 553,284.27 = 219,643.65 : x
  2. Step 2: Convert to fraction form
    400,931.37/553,284.27 = 219,643.65/x
  3. Step 3: Cross multiply
    400,931.37x = 553,284.27 × 219,643.65
  4. Step 4: Simplify right side
    400,931.37x = 121,525,376,550.39
  5. Step 5: Solve for x
    x = 121,525,376,550.39/400,931.37
  6. Step 6: Final answer
    x = 303,107.68

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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.