Home / 272,967,819.40-409,451,729.10-78,885,566.20

Finding the Fourth Proportional to 272,967,819.40, 409,451,729.10 and 78,885,566.20

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Solution

The fourth proportional to 272,967,819.40, 409,451,729.10 and 78,885,566.20 is: 118,328,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,967,819.40 : 409,451,729.10 = 78,885,566.20 : x
  2. Step 2: Convert to fraction form
    272,967,819.40/409,451,729.10 = 78,885,566.20/x
  3. Step 3: Cross multiply
    272,967,819.40x = 409,451,729.10 × 78,885,566.20
  4. Step 4: Simplify right side
    272,967,819.40x = 32,299,831,481,622,520
  5. Step 5: Solve for x
    x = 32,299,831,481,622,520/272,967,819.40
  6. Step 6: Final answer
    x = 118,328,349.30

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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.