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Finding the Fourth Proportional to 512,518.71, 768,904.96 and 152,687.96

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Solution

The fourth proportional to 512,518.71, 768,904.96 and 152,687.96 is: 229,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,518.71 : 768,904.96 = 152,687.96 : x
  2. Step 2: Convert to fraction form
    512,518.71/768,904.96 = 152,687.96/x
  3. Step 3: Cross multiply
    512,518.71x = 768,904.96 × 152,687.96
  4. Step 4: Simplify right side
    512,518.71x = 117,402,525,550.04
  5. Step 5: Solve for x
    x = 117,402,525,550.04/512,518.71
  6. Step 6: Final answer
    x = 229,069.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.