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Finding the Fourth Proportional to 316,283.40, 436,472.15 and 173,043

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Solution

The fourth proportional to 316,283.40, 436,472.15 and 173,043 is: 238,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,283.40 : 436,472.15 = 173,043 : x
  2. Step 2: Convert to fraction form
    316,283.40/436,472.15 = 173,043/x
  3. Step 3: Cross multiply
    316,283.40x = 436,472.15 × 173,043
  4. Step 4: Simplify right side
    316,283.40x = 75,528,449,387.24
  5. Step 5: Solve for x
    x = 75,528,449,387.24/316,283.40
  6. Step 6: Final answer
    x = 238,799.92

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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.