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Finding the Fourth Proportional to 289,693.90, 434,540.85 and 254,673.10

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Solution

The fourth proportional to 289,693.90, 434,540.85 and 254,673.10 is: 382,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,693.90 : 434,540.85 = 254,673.10 : x
  2. Step 2: Convert to fraction form
    289,693.90/434,540.85 = 254,673.10/x
  3. Step 3: Cross multiply
    289,693.90x = 434,540.85 × 254,673.10
  4. Step 4: Simplify right side
    289,693.90x = 110,665,865,346.14
  5. Step 5: Solve for x
    x = 110,665,865,346.14/289,693.90
  6. Step 6: Final answer
    x = 382,009.65

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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.