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Finding the Fourth Proportional to 316,641.96, 436,943.16 and 173,378.88

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Solution

The fourth proportional to 316,641.96, 436,943.16 and 173,378.88 is: 239,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,641.96 : 436,943.16 = 173,378.88 : x
  2. Step 2: Convert to fraction form
    316,641.96/436,943.16 = 173,378.88/x
  3. Step 3: Cross multiply
    316,641.96x = 436,943.16 × 173,378.88
  4. Step 4: Simplify right side
    316,641.96x = 75,756,715,704.46
  5. Step 5: Solve for x
    x = 75,756,715,704.46/316,641.96
  6. Step 6: Final answer
    x = 239,250.40

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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.