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Finding the Fourth Proportional to 327,802.60, 491,703.90 and 289,311.40

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Solution

The fourth proportional to 327,802.60, 491,703.90 and 289,311.40 is: 433,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,802.60 : 491,703.90 = 289,311.40 : x
  2. Step 2: Convert to fraction form
    327,802.60/491,703.90 = 289,311.40/x
  3. Step 3: Cross multiply
    327,802.60x = 491,703.90 × 289,311.40
  4. Step 4: Simplify right side
    327,802.60x = 142,255,543,694.46
  5. Step 5: Solve for x
    x = 142,255,543,694.46/327,802.60
  6. Step 6: Final answer
    x = 433,967.10

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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.