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Finding the Fourth Proportional to 275,009.20, 412,513.80 and 164,417.20

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Solution

The fourth proportional to 275,009.20, 412,513.80 and 164,417.20 is: 246,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,009.20 : 412,513.80 = 164,417.20 : x
  2. Step 2: Convert to fraction form
    275,009.20/412,513.80 = 164,417.20/x
  3. Step 3: Cross multiply
    275,009.20x = 412,513.80 × 164,417.20
  4. Step 4: Simplify right side
    275,009.20x = 67,824,363,957.36
  5. Step 5: Solve for x
    x = 67,824,363,957.36/275,009.20
  6. Step 6: Final answer
    x = 246,625.80

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1.5x scale

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.