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Finding the Fourth Proportional to 485,760.55, 728,802.03 and 148,804.51

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Solution

The fourth proportional to 485,760.55, 728,802.03 and 148,804.51 is: 223,256.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,760.55 : 728,802.03 = 148,804.51 : x
  2. Step 2: Convert to fraction form
    485,760.55/728,802.03 = 148,804.51/x
  3. Step 3: Cross multiply
    485,760.55x = 728,802.03 × 148,804.51
  4. Step 4: Simplify right side
    485,760.55x = 108,449,025,570.53
  5. Step 5: Solve for x
    x = 108,449,025,570.53/485,760.55
  6. Step 6: Final answer
    x = 223,256.14

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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.