Home / 394,931.69-545,004.09-213,643.17

Finding the Fourth Proportional to 394,931.69, 545,004.09 and 213,643.17

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Solution

The fourth proportional to 394,931.69, 545,004.09 and 213,643.17 is: 294,826.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,931.69 : 545,004.09 = 213,643.17 : x
  2. Step 2: Convert to fraction form
    394,931.69/545,004.09 = 213,643.17/x
  3. Step 3: Cross multiply
    394,931.69x = 545,004.09 × 213,643.17
  4. Step 4: Simplify right side
    394,931.69x = 116,436,402,382.52
  5. Step 5: Solve for x
    x = 116,436,402,382.52/394,931.69
  6. Step 6: Final answer
    x = 294,826.69

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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.