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Finding the Fourth Proportional to 293,487.40, 439,064.70 and 254,477.80

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Solution

The fourth proportional to 293,487.40, 439,064.70 and 254,477.80 is: 380,705.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,487.40 : 439,064.70 = 254,477.80 : x
  2. Step 2: Convert to fraction form
    293,487.40/439,064.70 = 254,477.80/x
  3. Step 3: Cross multiply
    293,487.40x = 439,064.70 × 254,477.80
  4. Step 4: Simplify right side
    293,487.40x = 111,732,218,913.66
  5. Step 5: Solve for x
    x = 111,732,218,913.66/293,487.40
  6. Step 6: Final answer
    x = 380,705.33

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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.