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Finding the Fourth Proportional to 218,660.32, 301,752.30 and 123,168.88

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Solution

The fourth proportional to 218,660.32, 301,752.30 and 123,168.88 is: 169,973.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,660.32 : 301,752.30 = 123,168.88 : x
  2. Step 2: Convert to fraction form
    218,660.32/301,752.30 = 123,168.88/x
  3. Step 3: Cross multiply
    218,660.32x = 301,752.30 × 123,168.88
  4. Step 4: Simplify right side
    218,660.32x = 37,166,492,828.42
  5. Step 5: Solve for x
    x = 37,166,492,828.42/218,660.32
  6. Step 6: Final answer
    x = 169,973.65

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1.5x scale

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.