Home / 212,778,856.40-319,310,002.20-97,704,165.20

Finding the Fourth Proportional to 212,778,856.40, 319,310,002.20 and 97,704,165.20

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Solution

The fourth proportional to 212,778,856.40, 319,310,002.20 and 97,704,165.20 is: 146,621,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,778,856.40 : 319,310,002.20 = 97,704,165.20 : x
  2. Step 2: Convert to fraction form
    212,778,856.40/319,310,002.20 = 97,704,165.20/x
  3. Step 3: Cross multiply
    212,778,856.40x = 319,310,002.20 × 97,704,165.20
  4. Step 4: Simplify right side
    212,778,856.40x = 31,197,917,204,961,164
  5. Step 5: Solve for x
    x = 31,197,917,204,961,164/212,778,856.40
  6. Step 6: Final answer
    x = 146,621,321.93

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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.