Home / 212,821,928.40-319,374,610.20-97,747,237.20

Finding the Fourth Proportional to 212,821,928.40, 319,374,610.20 and 97,747,237.20

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Solution

The fourth proportional to 212,821,928.40, 319,374,610.20 and 97,747,237.20 is: 146,685,945.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,821,928.40 : 319,374,610.20 = 97,747,237.20 : x
  2. Step 2: Convert to fraction form
    212,821,928.40/319,374,610.20 = 97,747,237.20/x
  3. Step 3: Cross multiply
    212,821,928.40x = 319,374,610.20 × 97,747,237.20
  4. Step 4: Simplify right side
    212,821,928.40x = 31,217,985,778,876,940
  5. Step 5: Solve for x
    x = 31,217,985,778,876,940/212,821,928.40
  6. Step 6: Final answer
    x = 146,685,945.45

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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.