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Finding the Fourth Proportional to 316,539.86, 436,826.28 and 173,313.23

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Solution

The fourth proportional to 316,539.86, 436,826.28 and 173,313.23 is: 239,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,539.86 : 436,826.28 = 173,313.23 : x
  2. Step 2: Convert to fraction form
    316,539.86/436,826.28 = 173,313.23/x
  3. Step 3: Cross multiply
    316,539.86x = 436,826.28 × 173,313.23
  4. Step 4: Simplify right side
    316,539.86x = 75,707,773,535.68
  5. Step 5: Solve for x
    x = 75,707,773,535.68/316,539.86
  6. Step 6: Final answer
    x = 239,172.95

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1.5x scale

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.