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Finding the Fourth Proportional to 328,076.10, 492,114.15 and 280,836.90

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Solution

The fourth proportional to 328,076.10, 492,114.15 and 280,836.90 is: 421,255.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,076.10 : 492,114.15 = 280,836.90 : x
  2. Step 2: Convert to fraction form
    328,076.10/492,114.15 = 280,836.90/x
  3. Step 3: Cross multiply
    328,076.10x = 492,114.15 × 280,836.90
  4. Step 4: Simplify right side
    328,076.10x = 138,203,812,332.14
  5. Step 5: Solve for x
    x = 138,203,812,332.14/328,076.10
  6. Step 6: Final answer
    x = 421,255.35

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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.