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Finding the Fourth Proportional to 640,106.75, 960,303.12 and 240,750.98

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Solution

The fourth proportional to 640,106.75, 960,303.12 and 240,750.98 is: 361,180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,106.75 : 960,303.12 = 240,750.98 : x
  2. Step 2: Convert to fraction form
    640,106.75/960,303.12 = 240,750.98/x
  3. Step 3: Cross multiply
    640,106.75x = 960,303.12 × 240,750.98
  4. Step 4: Simplify right side
    640,106.75x = 231,193,912,435.54
  5. Step 5: Solve for x
    x = 231,193,912,435.54/640,106.75
  6. Step 6: Final answer
    x = 361,180.25

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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.