Home / 397,109.08-548,008.50-215,818.12

Finding the Fourth Proportional to 397,109.08, 548,008.50 and 215,818.12

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Solution

The fourth proportional to 397,109.08, 548,008.50 and 215,818.12 is: 297,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,109.08 : 548,008.50 = 215,818.12 : x
  2. Step 2: Convert to fraction form
    397,109.08/548,008.50 = 215,818.12/x
  3. Step 3: Cross multiply
    397,109.08x = 548,008.50 × 215,818.12
  4. Step 4: Simplify right side
    397,109.08x = 118,270,164,214.02
  5. Step 5: Solve for x
    x = 118,270,164,214.02/397,109.08
  6. Step 6: Final answer
    x = 297,827.90

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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.