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Finding the Fourth Proportional to 294,076.40, 439,948.20 and 255,066.80

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Solution

The fourth proportional to 294,076.40, 439,948.20 and 255,066.80 is: 381,588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,076.40 : 439,948.20 = 255,066.80 : x
  2. Step 2: Convert to fraction form
    294,076.40/439,948.20 = 255,066.80/x
  3. Step 3: Cross multiply
    294,076.40x = 439,948.20 × 255,066.80
  4. Step 4: Simplify right side
    294,076.40x = 112,216,179,539.76
  5. Step 5: Solve for x
    x = 112,216,179,539.76/294,076.40
  6. Step 6: Final answer
    x = 381,588.52

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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.