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Finding the Fourth Proportional to 290,668,082.55, 436,002,123.83 and 290,668,082.55

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Solution

The fourth proportional to 290,668,082.55, 436,002,123.83 and 290,668,082.55 is: 436,002,123.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,668,082.55 : 436,002,123.83 = 290,668,082.55 : x
  2. Step 2: Convert to fraction form
    290,668,082.55/436,002,123.83 = 290,668,082.55/x
  3. Step 3: Cross multiply
    290,668,082.55x = 436,002,123.83 × 290,668,082.55
  4. Step 4: Simplify right side
    290,668,082.55x = 126,731,901,319,940,416
  5. Step 5: Solve for x
    x = 126,731,901,319,940,416/290,668,082.55
  6. Step 6: Final answer
    x = 436,002,123.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.