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Finding the Fourth Proportional to 329,015.40, 493,652.70 and 129,301.80

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Solution

The fourth proportional to 329,015.40, 493,652.70 and 129,301.80 is: 194,003.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,015.40 : 493,652.70 = 129,301.80 : x
  2. Step 2: Convert to fraction form
    329,015.40/493,652.70 = 129,301.80/x
  3. Step 3: Cross multiply
    329,015.40x = 493,652.70 × 129,301.80
  4. Step 4: Simplify right side
    329,015.40x = 63,830,182,684.86
  5. Step 5: Solve for x
    x = 63,830,182,684.86/329,015.40
  6. Step 6: Final answer
    x = 194,003.63

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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.