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Finding the Fourth Proportional to 525,115.80, 787,788.90 and 170,069.40

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Solution

The fourth proportional to 525,115.80, 787,788.90 and 170,069.40 is: 255,141.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,115.80 : 787,788.90 = 170,069.40 : x
  2. Step 2: Convert to fraction form
    525,115.80/787,788.90 = 170,069.40/x
  3. Step 3: Cross multiply
    525,115.80x = 787,788.90 × 170,069.40
  4. Step 4: Simplify right side
    525,115.80x = 133,978,785,549.66
  5. Step 5: Solve for x
    x = 133,978,785,549.66/525,115.80
  6. Step 6: Final answer
    x = 255,141.41

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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.