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Finding the Fourth Proportional to 293,008.40, 438,346.20 and 253,998.80

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Solution

The fourth proportional to 293,008.40, 438,346.20 and 253,998.80 is: 379,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,008.40 : 438,346.20 = 253,998.80 : x
  2. Step 2: Convert to fraction form
    293,008.40/438,346.20 = 253,998.80/x
  3. Step 3: Cross multiply
    293,008.40x = 438,346.20 × 253,998.80
  4. Step 4: Simplify right side
    293,008.40x = 111,339,408,784.56
  5. Step 5: Solve for x
    x = 111,339,408,784.56/293,008.40
  6. Step 6: Final answer
    x = 379,987.09

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1.5x scale

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.