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Finding the Fourth Proportional to 245,764.80, 368,647.20 and 87,936.30

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Solution

The fourth proportional to 245,764.80, 368,647.20 and 87,936.30 is: 131,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,764.80 : 368,647.20 = 87,936.30 : x
  2. Step 2: Convert to fraction form
    245,764.80/368,647.20 = 87,936.30/x
  3. Step 3: Cross multiply
    245,764.80x = 368,647.20 × 87,936.30
  4. Step 4: Simplify right side
    245,764.80x = 32,417,470,773.36
  5. Step 5: Solve for x
    x = 32,417,470,773.36/245,764.80
  6. Step 6: Final answer
    x = 131,904.45

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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.