Home / 213,586,231.81-320,391,680.45-82,429,187.90

Finding the Fourth Proportional to 213,586,231.81, 320,391,680.45 and 82,429,187.90

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Solution

The fourth proportional to 213,586,231.81, 320,391,680.45 and 82,429,187.90 is: 123,648,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,586,231.81 : 320,391,680.45 = 82,429,187.90 : x
  2. Step 2: Convert to fraction form
    213,586,231.81/320,391,680.45 = 82,429,187.90/x
  3. Step 3: Cross multiply
    213,586,231.81x = 320,391,680.45 × 82,429,187.90
  4. Step 4: Simplify right side
    213,586,231.81x = 26,409,626,027,395,700
  5. Step 5: Solve for x
    x = 26,409,626,027,395,700/213,586,231.81
  6. Step 6: Final answer
    x = 123,648,541.40

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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.