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Finding the Fourth Proportional to 459,446.94, 689,169.87 and 143,928.42

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Solution

The fourth proportional to 459,446.94, 689,169.87 and 143,928.42 is: 215,892.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,446.94 : 689,169.87 = 143,928.42 : x
  2. Step 2: Convert to fraction form
    459,446.94/689,169.87 = 143,928.42/x
  3. Step 3: Cross multiply
    459,446.94x = 689,169.87 × 143,928.42
  4. Step 4: Simplify right side
    459,446.94x = 99,191,130,500.71
  5. Step 5: Solve for x
    x = 99,191,130,500.71/459,446.94
  6. Step 6: Final answer
    x = 215,892.46

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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.