Home / 385,174.38-531,538.83-215,409.18

Finding the Fourth Proportional to 385,174.38, 531,538.83 and 215,409.18

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Solution

The fourth proportional to 385,174.38, 531,538.83 and 215,409.18 is: 297,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,174.38 : 531,538.83 = 215,409.18 : x
  2. Step 2: Convert to fraction form
    385,174.38/531,538.83 = 215,409.18/x
  3. Step 3: Cross multiply
    385,174.38x = 531,538.83 × 215,409.18
  4. Step 4: Simplify right side
    385,174.38x = 114,498,343,508.46
  5. Step 5: Solve for x
    x = 114,498,343,508.46/385,174.38
  6. Step 6: Final answer
    x = 297,263.65

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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.