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Finding the Fourth Proportional to 328,461.36, 492,692.46 and 79,143.36

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Solution

The fourth proportional to 328,461.36, 492,692.46 and 79,143.36 is: 118,715.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,461.36 : 492,692.46 = 79,143.36 : x
  2. Step 2: Convert to fraction form
    328,461.36/492,692.46 = 79,143.36/x
  3. Step 3: Cross multiply
    328,461.36x = 492,692.46 × 79,143.36
  4. Step 4: Simplify right side
    328,461.36x = 38,993,336,731.07
  5. Step 5: Solve for x
    x = 38,993,336,731.07/328,461.36
  6. Step 6: Final answer
    x = 118,715.14

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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.