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Finding the Fourth Proportional to 469,988.80, 648,585.36 and 255,129.01

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Solution

The fourth proportional to 469,988.80, 648,585.36 and 255,129.01 is: 352,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,988.80 : 648,585.36 = 255,129.01 : x
  2. Step 2: Convert to fraction form
    469,988.80/648,585.36 = 255,129.01/x
  3. Step 3: Cross multiply
    469,988.80x = 648,585.36 × 255,129.01
  4. Step 4: Simplify right side
    469,988.80x = 165,472,940,797.29
  5. Step 5: Solve for x
    x = 165,472,940,797.29/469,988.80
  6. Step 6: Final answer
    x = 352,078.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.