Home / 317,871.54-438,332.75-221,184.95

Finding the Fourth Proportional to 317,871.54, 438,332.75 and 221,184.95

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Solution

The fourth proportional to 317,871.54, 438,332.75 and 221,184.95 is: 305,005.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,871.54 : 438,332.75 = 221,184.95 : x
  2. Step 2: Convert to fraction form
    317,871.54/438,332.75 = 221,184.95/x
  3. Step 3: Cross multiply
    317,871.54x = 438,332.75 × 221,184.95
  4. Step 4: Simplify right side
    317,871.54x = 96,952,604,923.97
  5. Step 5: Solve for x
    x = 96,952,604,923.97/317,871.54
  6. Step 6: Final answer
    x = 305,005.62

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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.