Home / 385,435,289.10-531,885,376.16-218,206,239.73

Finding the Fourth Proportional to 385,435,289.10, 531,885,376.16 and 218,206,239.73

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Solution

The fourth proportional to 385,435,289.10, 531,885,376.16 and 218,206,239.73 is: 301,115,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,435,289.10 : 531,885,376.16 = 218,206,239.73 : x
  2. Step 2: Convert to fraction form
    385,435,289.10/531,885,376.16 = 218,206,239.73/x
  3. Step 3: Cross multiply
    385,435,289.10x = 531,885,376.16 × 218,206,239.73
  4. Step 4: Simplify right side
    385,435,289.10x = 116,060,707,898,436,272
  5. Step 5: Solve for x
    x = 116,060,707,898,436,272/385,435,289.10
  6. Step 6: Final answer
    x = 301,115,936.14

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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.