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Finding the Fourth Proportional to 270,038.40, 405,057.60 and 266,101.80

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Solution

The fourth proportional to 270,038.40, 405,057.60 and 266,101.80 is: 399,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,038.40 : 405,057.60 = 266,101.80 : x
  2. Step 2: Convert to fraction form
    270,038.40/405,057.60 = 266,101.80/x
  3. Step 3: Cross multiply
    270,038.40x = 405,057.60 × 266,101.80
  4. Step 4: Simplify right side
    270,038.40x = 107,786,556,463.68
  5. Step 5: Solve for x
    x = 107,786,556,463.68/270,038.40
  6. Step 6: Final answer
    x = 399,152.70

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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.