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Finding the Fourth Proportional to 380,936.76, 525,698.67 and 208,870.44

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Solution

The fourth proportional to 380,936.76, 525,698.67 and 208,870.44 is: 288,244.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,936.76 : 525,698.67 = 208,870.44 : x
  2. Step 2: Convert to fraction form
    380,936.76/525,698.67 = 208,870.44/x
  3. Step 3: Cross multiply
    380,936.76x = 525,698.67 × 208,870.44
  4. Step 4: Simplify right side
    380,936.76x = 109,802,912,510.32
  5. Step 5: Solve for x
    x = 109,802,912,510.32/380,936.76
  6. Step 6: Final answer
    x = 288,244.46

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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.