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Finding the Fourth Proportional to 293,456.40, 439,018.20 and 254,446.80

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Solution

The fourth proportional to 293,456.40, 439,018.20 and 254,446.80 is: 380,658.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,456.40 : 439,018.20 = 254,446.80 : x
  2. Step 2: Convert to fraction form
    293,456.40/439,018.20 = 254,446.80/x
  3. Step 3: Cross multiply
    293,456.40x = 439,018.20 × 254,446.80
  4. Step 4: Simplify right side
    293,456.40x = 111,706,776,131.76
  5. Step 5: Solve for x
    x = 111,706,776,131.76/293,456.40
  6. Step 6: Final answer
    x = 380,658.85

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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.