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Finding the Fourth Proportional to 640,050.70, 960,072.58 and 260,969.96

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Solution

The fourth proportional to 640,050.70, 960,072.58 and 260,969.96 is: 391,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,050.70 : 960,072.58 = 260,969.96 : x
  2. Step 2: Convert to fraction form
    640,050.70/960,072.58 = 260,969.96/x
  3. Step 3: Cross multiply
    640,050.70x = 960,072.58 × 260,969.96
  4. Step 4: Simplify right side
    640,050.70x = 250,550,102,799.70
  5. Step 5: Solve for x
    x = 250,550,102,799.70/640,050.70
  6. Step 6: Final answer
    x = 391,453.53

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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.