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Finding the Fourth Proportional to 289,008.40, 432,898.20 and 189,475.60

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Solution

The fourth proportional to 289,008.40, 432,898.20 and 189,475.60 is: 283,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,008.40 : 432,898.20 = 189,475.60 : x
  2. Step 2: Convert to fraction form
    289,008.40/432,898.20 = 189,475.60/x
  3. Step 3: Cross multiply
    289,008.40x = 432,898.20 × 189,475.60
  4. Step 4: Simplify right side
    289,008.40x = 82,023,646,183.92
  5. Step 5: Solve for x
    x = 82,023,646,183.92/289,008.40
  6. Step 6: Final answer
    x = 283,810.60

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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.