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Finding the Fourth Proportional to 316,385.36, 436,624.80 and 173,157.92

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Solution

The fourth proportional to 316,385.36, 436,624.80 and 173,157.92 is: 238,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,385.36 : 436,624.80 = 173,157.92 : x
  2. Step 2: Convert to fraction form
    316,385.36/436,624.80 = 173,157.92/x
  3. Step 3: Cross multiply
    316,385.36x = 436,624.80 × 173,157.92
  4. Step 4: Simplify right side
    316,385.36x = 75,605,042,188.42
  5. Step 5: Solve for x
    x = 75,605,042,188.42/316,385.36
  6. Step 6: Final answer
    x = 238,965.05

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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.