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Finding the Fourth Proportional to 253,358.70, 380,038.05 and 103,500.60

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Solution

The fourth proportional to 253,358.70, 380,038.05 and 103,500.60 is: 155,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,358.70 : 380,038.05 = 103,500.60 : x
  2. Step 2: Convert to fraction form
    253,358.70/380,038.05 = 103,500.60/x
  3. Step 3: Cross multiply
    253,358.70x = 380,038.05 × 103,500.60
  4. Step 4: Simplify right side
    253,358.70x = 39,334,166,197.83
  5. Step 5: Solve for x
    x = 39,334,166,197.83/253,358.70
  6. Step 6: Final answer
    x = 155,250.90

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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.