Home / 208,599,329.60-312,940,984.80-72,256,500.80

Finding the Fourth Proportional to 208,599,329.60, 312,940,984.80 and 72,256,500.80

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Solution

The fourth proportional to 208,599,329.60, 312,940,984.80 and 72,256,500.80 is: 108,399,296.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,599,329.60 : 312,940,984.80 = 72,256,500.80 : x
  2. Step 2: Convert to fraction form
    208,599,329.60/312,940,984.80 = 72,256,500.80/x
  3. Step 3: Cross multiply
    208,599,329.60x = 312,940,984.80 × 72,256,500.80
  4. Step 4: Simplify right side
    208,599,329.60x = 22,612,020,518,553,988
  5. Step 5: Solve for x
    x = 22,612,020,518,553,988/208,599,329.60
  6. Step 6: Final answer
    x = 108,399,296.21

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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.