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Finding the Fourth Proportional to 426,082,771.70, 638,559,162.03 and 218,812,809.14

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Solution

The fourth proportional to 426,082,771.70, 638,559,162.03 and 218,812,809.14 is: 327,929,062.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,082,771.70 : 638,559,162.03 = 218,812,809.14 : x
  2. Step 2: Convert to fraction form
    426,082,771.70/638,559,162.03 = 218,812,809.14/x
  3. Step 3: Cross multiply
    426,082,771.70x = 638,559,162.03 × 218,812,809.14
  4. Step 4: Simplify right side
    426,082,771.70x = 139,724,924,045,868,704
  5. Step 5: Solve for x
    x = 139,724,924,045,868,704/426,082,771.70
  6. Step 6: Final answer
    x = 327,929,062.91

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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.