Home / 459,210.20-688,815.30-143,669.84

Finding the Fourth Proportional to 459,210.20, 688,815.30 and 143,669.84

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Solution

The fourth proportional to 459,210.20, 688,815.30 and 143,669.84 is: 215,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,210.20 : 688,815.30 = 143,669.84 : x
  2. Step 2: Convert to fraction form
    459,210.20/688,815.30 = 143,669.84/x
  3. Step 3: Cross multiply
    459,210.20x = 688,815.30 × 143,669.84
  4. Step 4: Simplify right side
    459,210.20x = 98,961,983,940.55
  5. Step 5: Solve for x
    x = 98,961,983,940.55/459,210.20
  6. Step 6: Final answer
    x = 215,504.76

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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.