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Finding the Fourth Proportional to 245,518.85, 368,368.23 and 103,399.90

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Solution

The fourth proportional to 245,518.85, 368,368.23 and 103,399.90 is: 155,137.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,518.85 : 368,368.23 = 103,399.90 : x
  2. Step 2: Convert to fraction form
    245,518.85/368,368.23 = 103,399.90/x
  3. Step 3: Cross multiply
    245,518.85x = 368,368.23 × 103,399.90
  4. Step 4: Simplify right side
    245,518.85x = 38,089,237,030.38
  5. Step 5: Solve for x
    x = 38,089,237,030.38/245,518.85
  6. Step 6: Final answer
    x = 155,137.73

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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.