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Finding the Fourth Proportional to 262,415.70, 393,623.55 and 120,260.70

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Solution

The fourth proportional to 262,415.70, 393,623.55 and 120,260.70 is: 180,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,415.70 : 393,623.55 = 120,260.70 : x
  2. Step 2: Convert to fraction form
    262,415.70/393,623.55 = 120,260.70/x
  3. Step 3: Cross multiply
    262,415.70x = 393,623.55 × 120,260.70
  4. Step 4: Simplify right side
    262,415.70x = 47,337,443,659.49
  5. Step 5: Solve for x
    x = 47,337,443,659.49/262,415.70
  6. Step 6: Final answer
    x = 180,391.05

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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.