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Finding the Fourth Proportional to 316,531.68, 436,800.56 and 173,288.16

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Solution

The fourth proportional to 316,531.68, 436,800.56 and 173,288.16 is: 239,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,531.68 : 436,800.56 = 173,288.16 : x
  2. Step 2: Convert to fraction form
    316,531.68/436,800.56 = 173,288.16/x
  3. Step 3: Cross multiply
    316,531.68x = 436,800.56 × 173,288.16
  4. Step 4: Simplify right side
    316,531.68x = 75,692,365,329.37
  5. Step 5: Solve for x
    x = 75,692,365,329.37/316,531.68
  6. Step 6: Final answer
    x = 239,130.46

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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.