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Finding the Fourth Proportional to 329,113.60, 493,670.40 and 290,406.40

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Solution

The fourth proportional to 329,113.60, 493,670.40 and 290,406.40 is: 435,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,113.60 : 493,670.40 = 290,406.40 : x
  2. Step 2: Convert to fraction form
    329,113.60/493,670.40 = 290,406.40/x
  3. Step 3: Cross multiply
    329,113.60x = 493,670.40 × 290,406.40
  4. Step 4: Simplify right side
    329,113.60x = 143,365,043,650.56
  5. Step 5: Solve for x
    x = 143,365,043,650.56/329,113.60
  6. Step 6: Final answer
    x = 435,609.60

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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.