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Finding the Fourth Proportional to 484,509.79, 668,616.88 and 269,649.91

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Solution

The fourth proportional to 484,509.79, 668,616.88 and 269,649.91 is: 372,113.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,509.79 : 668,616.88 = 269,649.91 : x
  2. Step 2: Convert to fraction form
    484,509.79/668,616.88 = 269,649.91/x
  3. Step 3: Cross multiply
    484,509.79x = 668,616.88 × 269,649.91
  4. Step 4: Simplify right side
    484,509.79x = 180,292,481,516.48
  5. Step 5: Solve for x
    x = 180,292,481,516.48/484,509.79
  6. Step 6: Final answer
    x = 372,113.19

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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.