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Finding the Fourth Proportional to 245,519.85, 368,369.73 and 103,400.90

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Solution

The fourth proportional to 245,519.85, 368,369.73 and 103,400.90 is: 155,139.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,519.85 : 368,369.73 = 103,400.90 : x
  2. Step 2: Convert to fraction form
    245,519.85/368,369.73 = 103,400.90/x
  3. Step 3: Cross multiply
    245,519.85x = 368,369.73 × 103,400.90
  4. Step 4: Simplify right side
    245,519.85x = 38,089,761,614.76
  5. Step 5: Solve for x
    x = 38,089,761,614.76/245,519.85
  6. Step 6: Final answer
    x = 155,139.23

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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.