Home / 384,876.34-531,120.18-215,126.26

Finding the Fourth Proportional to 384,876.34, 531,120.18 and 215,126.26

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Solution

The fourth proportional to 384,876.34, 531,120.18 and 215,126.26 is: 296,869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,876.34 : 531,120.18 = 215,126.26 : x
  2. Step 2: Convert to fraction form
    384,876.34/531,120.18 = 215,126.26/x
  3. Step 3: Cross multiply
    384,876.34x = 531,120.18 × 215,126.26
  4. Step 4: Simplify right side
    384,876.34x = 114,257,897,791.10
  5. Step 5: Solve for x
    x = 114,257,897,791.10/384,876.34
  6. Step 6: Final answer
    x = 296,869.11

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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.