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Finding the Fourth Proportional to 492,173, 738,330.78 and 155,099.60

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Solution

The fourth proportional to 492,173, 738,330.78 and 155,099.60 is: 232,671.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,173 : 738,330.78 = 155,099.60 : x
  2. Step 2: Convert to fraction form
    492,173/738,330.78 = 155,099.60/x
  3. Step 3: Cross multiply
    492,173x = 738,330.78 × 155,099.60
  4. Step 4: Simplify right side
    492,173x = 114,514,808,645.69
  5. Step 5: Solve for x
    x = 114,514,808,645.69/492,173
  6. Step 6: Final answer
    x = 232,671.86

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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.