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Finding the Fourth Proportional to 218,006.40, 326,548.80 and 194,659.20

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Solution

The fourth proportional to 218,006.40, 326,548.80 and 194,659.20 is: 291,577.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,006.40 : 326,548.80 = 194,659.20 : x
  2. Step 2: Convert to fraction form
    218,006.40/326,548.80 = 194,659.20/x
  3. Step 3: Cross multiply
    218,006.40x = 326,548.80 × 194,659.20
  4. Step 4: Simplify right side
    218,006.40x = 63,565,728,168.96
  5. Step 5: Solve for x
    x = 63,565,728,168.96/218,006.40
  6. Step 6: Final answer
    x = 291,577.35

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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.