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Finding the Fourth Proportional to 289,617.30, 433,907.55 and 248,145.30

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Solution

The fourth proportional to 289,617.30, 433,907.55 and 248,145.30 is: 371,773.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,617.30 : 433,907.55 = 248,145.30 : x
  2. Step 2: Convert to fraction form
    289,617.30/433,907.55 = 248,145.30/x
  3. Step 3: Cross multiply
    289,617.30x = 433,907.55 × 248,145.30
  4. Step 4: Simplify right side
    289,617.30x = 107,672,119,167.02
  5. Step 5: Solve for x
    x = 107,672,119,167.02/289,617.30
  6. Step 6: Final answer
    x = 371,773.78

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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.