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Finding the Fourth Proportional to 290,556.30, 435,834.45 and 103,500.30

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Solution

The fourth proportional to 290,556.30, 435,834.45 and 103,500.30 is: 155,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,556.30 : 435,834.45 = 103,500.30 : x
  2. Step 2: Convert to fraction form
    290,556.30/435,834.45 = 103,500.30/x
  3. Step 3: Cross multiply
    290,556.30x = 435,834.45 × 103,500.30
  4. Step 4: Simplify right side
    290,556.30x = 45,108,996,325.34
  5. Step 5: Solve for x
    x = 45,108,996,325.34/290,556.30
  6. Step 6: Final answer
    x = 155,250.45

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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.