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Finding the Fourth Proportional to 172,271.80, 257,970.30 and 164,398.60

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Solution

The fourth proportional to 172,271.80, 257,970.30 and 164,398.60 is: 246,180.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,271.80 : 257,970.30 = 164,398.60 : x
  2. Step 2: Convert to fraction form
    172,271.80/257,970.30 = 164,398.60/x
  3. Step 3: Cross multiply
    172,271.80x = 257,970.30 × 164,398.60
  4. Step 4: Simplify right side
    172,271.80x = 42,409,956,161.58
  5. Step 5: Solve for x
    x = 42,409,956,161.58/172,271.80
  6. Step 6: Final answer
    x = 246,180.49

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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.