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Finding the Fourth Proportional to 318,486.71, 439,461.47 and 182,494.51

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Solution

The fourth proportional to 318,486.71, 439,461.47 and 182,494.51 is: 251,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,486.71 : 439,461.47 = 182,494.51 : x
  2. Step 2: Convert to fraction form
    318,486.71/439,461.47 = 182,494.51/x
  3. Step 3: Cross multiply
    318,486.71x = 439,461.47 × 182,494.51
  4. Step 4: Simplify right side
    318,486.71x = 80,199,304,989.11
  5. Step 5: Solve for x
    x = 80,199,304,989.11/318,486.71
  6. Step 6: Final answer
    x = 251,813.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.