Home / 318,012,318.40-438,854,359.44-178,783,699.36

Finding the Fourth Proportional to 318,012,318.40, 438,854,359.44 and 178,783,699.36

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Solution

The fourth proportional to 318,012,318.40, 438,854,359.44 and 178,783,699.36 is: 246,720,020.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,012,318.40 : 438,854,359.44 = 178,783,699.36 : x
  2. Step 2: Convert to fraction form
    318,012,318.40/438,854,359.44 = 178,783,699.36/x
  3. Step 3: Cross multiply
    318,012,318.40x = 438,854,359.44 × 178,783,699.36
  4. Step 4: Simplify right side
    318,012,318.40x = 78,460,005,860,946,336
  5. Step 5: Solve for x
    x = 78,460,005,860,946,336/318,012,318.40
  6. Step 6: Final answer
    x = 246,720,020.96

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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.