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Finding the Fourth Proportional to 485,506.08, 728,259.84 and 153,108

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Solution

The fourth proportional to 485,506.08, 728,259.84 and 153,108 is: 229,662.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,506.08 : 728,259.84 = 153,108 : x
  2. Step 2: Convert to fraction form
    485,506.08/728,259.84 = 153,108/x
  3. Step 3: Cross multiply
    485,506.08x = 728,259.84 × 153,108
  4. Step 4: Simplify right side
    485,506.08x = 111,502,407,582.72
  5. Step 5: Solve for x
    x = 111,502,407,582.72/485,506.08
  6. Step 6: Final answer
    x = 229,662.23

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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.