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Finding the Fourth Proportional to 194,433.80, 291,261.90 and 131,448.20

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Solution

The fourth proportional to 194,433.80, 291,261.90 and 131,448.20 is: 196,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,433.80 : 291,261.90 = 131,448.20 : x
  2. Step 2: Convert to fraction form
    194,433.80/291,261.90 = 131,448.20/x
  3. Step 3: Cross multiply
    194,433.80x = 291,261.90 × 131,448.20
  4. Step 4: Simplify right side
    194,433.80x = 38,285,852,483.58
  5. Step 5: Solve for x
    x = 38,285,852,483.58/194,433.80
  6. Step 6: Final answer
    x = 196,909.45

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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.