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Finding the Fourth Proportional to 289,000.40, 433,500.60 and 254,008.40

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Solution

The fourth proportional to 289,000.40, 433,500.60 and 254,008.40 is: 381,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,000.40 : 433,500.60 = 254,008.40 : x
  2. Step 2: Convert to fraction form
    289,000.40/433,500.60 = 254,008.40/x
  3. Step 3: Cross multiply
    289,000.40x = 433,500.60 × 254,008.40
  4. Step 4: Simplify right side
    289,000.40x = 110,112,793,805.04
  5. Step 5: Solve for x
    x = 110,112,793,805.04/289,000.40
  6. Step 6: Final answer
    x = 381,012.60

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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.