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Finding the Fourth Proportional to 245,326.40, 367,989.60 and 105,099.20

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Solution

The fourth proportional to 245,326.40, 367,989.60 and 105,099.20 is: 157,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,326.40 : 367,989.60 = 105,099.20 : x
  2. Step 2: Convert to fraction form
    245,326.40/367,989.60 = 105,099.20/x
  3. Step 3: Cross multiply
    245,326.40x = 367,989.60 × 105,099.20
  4. Step 4: Simplify right side
    245,326.40x = 38,675,412,568.32
  5. Step 5: Solve for x
    x = 38,675,412,568.32/245,326.40
  6. Step 6: Final answer
    x = 157,648.80

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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.