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Finding the Fourth Proportional to 298,917,642.81, 412,506,524.00 and 166,758,639.78

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Solution

The fourth proportional to 298,917,642.81, 412,506,524.00 and 166,758,639.78 is: 230,127,021.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,917,642.81 : 412,506,524.00 = 166,758,639.78 : x
  2. Step 2: Convert to fraction form
    298,917,642.81/412,506,524.00 = 166,758,639.78/x
  3. Step 3: Cross multiply
    298,917,642.81x = 412,506,524.00 × 166,758,639.78
  4. Step 4: Simplify right side
    298,917,642.81x = 68,789,026,841,782,136
  5. Step 5: Solve for x
    x = 68,789,026,841,782,136/298,917,642.81
  6. Step 6: Final answer
    x = 230,127,021.59

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.