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Finding the Fourth Proportional to 328,511.70, 492,427.35 and 178,434.90

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Solution

The fourth proportional to 328,511.70, 492,427.35 and 178,434.90 is: 267,467.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,511.70 : 492,427.35 = 178,434.90 : x
  2. Step 2: Convert to fraction form
    328,511.70/492,427.35 = 178,434.90/x
  3. Step 3: Cross multiply
    328,511.70x = 492,427.35 × 178,434.90
  4. Step 4: Simplify right side
    328,511.70x = 87,866,224,954.52
  5. Step 5: Solve for x
    x = 87,866,224,954.52/328,511.70
  6. Step 6: Final answer
    x = 267,467.57

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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.