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Finding the Fourth Proportional to 509,477.40, 764,216.10 and 273,281.40

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Solution

The fourth proportional to 509,477.40, 764,216.10 and 273,281.40 is: 409,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,477.40 : 764,216.10 = 273,281.40 : x
  2. Step 2: Convert to fraction form
    509,477.40/764,216.10 = 273,281.40/x
  3. Step 3: Cross multiply
    509,477.40x = 764,216.10 × 273,281.40
  4. Step 4: Simplify right side
    509,477.40x = 208,846,045,710.54
  5. Step 5: Solve for x
    x = 208,846,045,710.54/509,477.40
  6. Step 6: Final answer
    x = 409,922.10

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Similar ratio
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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.