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Finding the Fourth Proportional to 328,128.60, 492,711.30 and 240,000.60

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Solution

The fourth proportional to 328,128.60, 492,711.30 and 240,000.60 is: 360,380.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,128.60 : 492,711.30 = 240,000.60 : x
  2. Step 2: Convert to fraction form
    328,128.60/492,711.30 = 240,000.60/x
  3. Step 3: Cross multiply
    328,128.60x = 492,711.30 × 240,000.60
  4. Step 4: Simplify right side
    328,128.60x = 118,251,007,626.78
  5. Step 5: Solve for x
    x = 118,251,007,626.78/328,128.60
  6. Step 6: Final answer
    x = 360,380.07

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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.