Home / 208,608,328.20-312,912,492.30-154,188,769.80

Finding the Fourth Proportional to 208,608,328.20, 312,912,492.30 and 154,188,769.80

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Solution

The fourth proportional to 208,608,328.20, 312,912,492.30 and 154,188,769.80 is: 231,283,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,608,328.20 : 312,912,492.30 = 154,188,769.80 : x
  2. Step 2: Convert to fraction form
    208,608,328.20/312,912,492.30 = 154,188,769.80/x
  3. Step 3: Cross multiply
    208,608,328.20x = 312,912,492.30 × 154,188,769.80
  4. Step 4: Simplify right side
    208,608,328.20x = 48,247,592,242,788,976
  5. Step 5: Solve for x
    x = 48,247,592,242,788,976/208,608,328.20
  6. Step 6: Final answer
    x = 231,283,154.70

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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.