Home / 213,407,999.40-320,111,999.10-211,140,517.80

Finding the Fourth Proportional to 213,407,999.40, 320,111,999.10 and 211,140,517.80

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Solution

The fourth proportional to 213,407,999.40, 320,111,999.10 and 211,140,517.80 is: 316,710,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,407,999.40 : 320,111,999.10 = 211,140,517.80 : x
  2. Step 2: Convert to fraction form
    213,407,999.40/320,111,999.10 = 211,140,517.80/x
  3. Step 3: Cross multiply
    213,407,999.40x = 320,111,999.10 × 211,140,517.80
  4. Step 4: Simplify right side
    213,407,999.40x = 67,588,613,243,967,144
  5. Step 5: Solve for x
    x = 67,588,613,243,967,144/213,407,999.40
  6. Step 6: Final answer
    x = 316,710,776.70

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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.