Home / 331,775,999.40-497,663,999.10-209,947,852.20

Finding the Fourth Proportional to 331,775,999.40, 497,663,999.10 and 209,947,852.20

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Solution

The fourth proportional to 331,775,999.40, 497,663,999.10 and 209,947,852.20 is: 314,921,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,775,999.40 : 497,663,999.10 = 209,947,852.20 : x
  2. Step 2: Convert to fraction form
    331,775,999.40/497,663,999.10 = 209,947,852.20/x
  3. Step 3: Cross multiply
    331,775,999.40x = 497,663,999.10 × 209,947,852.20
  4. Step 4: Simplify right side
    331,775,999.40x = 104,483,487,728,307,728
  5. Step 5: Solve for x
    x = 104,483,487,728,307,728/331,775,999.40
  6. Step 6: Final answer
    x = 314,921,778.30

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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.