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Finding the Fourth Proportional to 509,914.80, 765,163.80 and 352,256.40

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Solution

The fourth proportional to 509,914.80, 765,163.80 and 352,256.40 is: 528,586.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,914.80 : 765,163.80 = 352,256.40 : x
  2. Step 2: Convert to fraction form
    509,914.80/765,163.80 = 352,256.40/x
  3. Step 3: Cross multiply
    509,914.80x = 765,163.80 × 352,256.40
  4. Step 4: Simplify right side
    509,914.80x = 269,533,845,598.32
  5. Step 5: Solve for x
    x = 269,533,845,598.32/509,914.80
  6. Step 6: Final answer
    x = 528,586.04

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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.