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Finding the Fourth Proportional to 485,969.60, 728,954.40 and 170,312.60

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Solution

The fourth proportional to 485,969.60, 728,954.40 and 170,312.60 is: 255,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,969.60 : 728,954.40 = 170,312.60 : x
  2. Step 2: Convert to fraction form
    485,969.60/728,954.40 = 170,312.60/x
  3. Step 3: Cross multiply
    485,969.60x = 728,954.40 × 170,312.60
  4. Step 4: Simplify right side
    485,969.60x = 124,150,119,145.44
  5. Step 5: Solve for x
    x = 124,150,119,145.44/485,969.60
  6. Step 6: Final answer
    x = 255,468.90

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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.