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Finding the Fourth Proportional to 360,436.21, 540,710.36 and 120,475.83

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Solution

The fourth proportional to 360,436.21, 540,710.36 and 120,475.83 is: 180,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,436.21 : 540,710.36 = 120,475.83 : x
  2. Step 2: Convert to fraction form
    360,436.21/540,710.36 = 120,475.83/x
  3. Step 3: Cross multiply
    360,436.21x = 540,710.36 × 120,475.83
  4. Step 4: Simplify right side
    360,436.21x = 65,142,529,410.60
  5. Step 5: Solve for x
    x = 65,142,529,410.60/360,436.21
  6. Step 6: Final answer
    x = 180,732.48

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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.