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Finding the Fourth Proportional to 291,459.20, 404,047.90 and 275,494.10

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Solution

The fourth proportional to 291,459.20, 404,047.90 and 275,494.10 is: 381,915.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,459.20 : 404,047.90 = 275,494.10 : x
  2. Step 2: Convert to fraction form
    291,459.20/404,047.90 = 275,494.10/x
  3. Step 3: Cross multiply
    291,459.20x = 404,047.90 × 275,494.10
  4. Step 4: Simplify right side
    291,459.20x = 111,312,812,567.39
  5. Step 5: Solve for x
    x = 111,312,812,567.39/291,459.20
  6. Step 6: Final answer
    x = 381,915.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.