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Finding the Fourth Proportional to 379,589.87, 569,385.02 and 99,107.12

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Solution

The fourth proportional to 379,589.87, 569,385.02 and 99,107.12 is: 148,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,589.87 : 569,385.02 = 99,107.12 : x
  2. Step 2: Convert to fraction form
    379,589.87/569,385.02 = 99,107.12/x
  3. Step 3: Cross multiply
    379,589.87x = 569,385.02 × 99,107.12
  4. Step 4: Simplify right side
    379,589.87x = 56,430,111,174.57
  5. Step 5: Solve for x
    x = 56,430,111,174.57/379,589.87
  6. Step 6: Final answer
    x = 148,660.74

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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.