Home / 208,656,379.20-312,984,568.80-72,296,443.20

Finding the Fourth Proportional to 208,656,379.20, 312,984,568.80 and 72,296,443.20

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Solution

The fourth proportional to 208,656,379.20, 312,984,568.80 and 72,296,443.20 is: 108,444,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,656,379.20 : 312,984,568.80 = 72,296,443.20 : x
  2. Step 2: Convert to fraction form
    208,656,379.20/312,984,568.80 = 72,296,443.20/x
  3. Step 3: Cross multiply
    208,656,379.20x = 312,984,568.80 × 72,296,443.20
  4. Step 4: Simplify right side
    208,656,379.20x = 22,627,671,100,725,692
  5. Step 5: Solve for x
    x = 22,627,671,100,725,692/208,656,379.20
  6. Step 6: Final answer
    x = 108,444,664.80

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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.