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Finding the Fourth Proportional to 245,343.60, 368,015.40 and 87,577.20

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Solution

The fourth proportional to 245,343.60, 368,015.40 and 87,577.20 is: 131,365.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,343.60 : 368,015.40 = 87,577.20 : x
  2. Step 2: Convert to fraction form
    245,343.60/368,015.40 = 87,577.20/x
  3. Step 3: Cross multiply
    245,343.60x = 368,015.40 × 87,577.20
  4. Step 4: Simplify right side
    245,343.60x = 32,229,758,288.88
  5. Step 5: Solve for x
    x = 32,229,758,288.88/245,343.60
  6. Step 6: Final answer
    x = 131,365.80

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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.