Home / 212,778,845.40-319,309,985.70-97,704,154.20

Finding the Fourth Proportional to 212,778,845.40, 319,309,985.70 and 97,704,154.20

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Solution

The fourth proportional to 212,778,845.40, 319,309,985.70 and 97,704,154.20 is: 146,621,305.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,778,845.40 : 319,309,985.70 = 97,704,154.20 : x
  2. Step 2: Convert to fraction form
    212,778,845.40/319,309,985.70 = 97,704,154.20/x
  3. Step 3: Cross multiply
    212,778,845.40x = 319,309,985.70 × 97,704,154.20
  4. Step 4: Simplify right side
    212,778,845.40x = 31,197,912,080,432,596
  5. Step 5: Solve for x
    x = 31,197,912,080,432,596/212,778,845.40
  6. Step 6: Final answer
    x = 146,621,305.43

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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.