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Finding the Fourth Proportional to 493,289.40, 739,934.10 and 257,093.40

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Solution

The fourth proportional to 493,289.40, 739,934.10 and 257,093.40 is: 385,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,289.40 : 739,934.10 = 257,093.40 : x
  2. Step 2: Convert to fraction form
    493,289.40/739,934.10 = 257,093.40/x
  3. Step 3: Cross multiply
    493,289.40x = 739,934.10 × 257,093.40
  4. Step 4: Simplify right side
    493,289.40x = 190,232,173,544.94
  5. Step 5: Solve for x
    x = 190,232,173,544.94/493,289.40
  6. Step 6: Final answer
    x = 385,640.10

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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.