Home / 459,643.20-689,464.80-144,099.60

Finding the Fourth Proportional to 459,643.20, 689,464.80 and 144,099.60

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Solution

The fourth proportional to 459,643.20, 689,464.80 and 144,099.60 is: 216,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,643.20 : 689,464.80 = 144,099.60 : x
  2. Step 2: Convert to fraction form
    459,643.20/689,464.80 = 144,099.60/x
  3. Step 3: Cross multiply
    459,643.20x = 689,464.80 × 144,099.60
  4. Step 4: Simplify right side
    459,643.20x = 99,351,601,894.08
  5. Step 5: Solve for x
    x = 99,351,601,894.08/459,643.20
  6. Step 6: Final answer
    x = 216,149.40

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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.