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Finding the Fourth Proportional to 324,008.60, 486,012.90 and 190,820.30

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Solution

The fourth proportional to 324,008.60, 486,012.90 and 190,820.30 is: 286,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,008.60 : 486,012.90 = 190,820.30 : x
  2. Step 2: Convert to fraction form
    324,008.60/486,012.90 = 190,820.30/x
  3. Step 3: Cross multiply
    324,008.60x = 486,012.90 × 190,820.30
  4. Step 4: Simplify right side
    324,008.60x = 92,741,127,381.87
  5. Step 5: Solve for x
    x = 92,741,127,381.87/324,008.60
  6. Step 6: Final answer
    x = 286,230.45

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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.