Home / 285,139,005.48-393,424,383.96-161,379,678.96

Finding the Fourth Proportional to 285,139,005.48, 393,424,383.96 and 161,379,678.96

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Solution

The fourth proportional to 285,139,005.48, 393,424,383.96 and 161,379,678.96 is: 222,665,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,139,005.48 : 393,424,383.96 = 161,379,678.96 : x
  2. Step 2: Convert to fraction form
    285,139,005.48/393,424,383.96 = 161,379,678.96/x
  3. Step 3: Cross multiply
    285,139,005.48x = 393,424,383.96 × 161,379,678.96
  4. Step 4: Simplify right side
    285,139,005.48x = 63,490,700,778,500,576
  5. Step 5: Solve for x
    x = 63,490,700,778,500,576/285,139,005.48
  6. Step 6: Final answer
    x = 222,665,786.01

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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.