Home / 397,110.79-548,012.89-215,823.16

Finding the Fourth Proportional to 397,110.79, 548,012.89 and 215,823.16

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Solution

The fourth proportional to 397,110.79, 548,012.89 and 215,823.16 is: 297,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,110.79 : 548,012.89 = 215,823.16 : x
  2. Step 2: Convert to fraction form
    397,110.79/548,012.89 = 215,823.16/x
  3. Step 3: Cross multiply
    397,110.79x = 548,012.89 × 215,823.16
  4. Step 4: Simplify right side
    397,110.79x = 118,273,870,900.47
  5. Step 5: Solve for x
    x = 118,273,870,900.47/397,110.79
  6. Step 6: Final answer
    x = 297,835.95

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1.5x scale

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.