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Finding the Fourth Proportional to 328,318.64, 492,477.90 and 79,000.64

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Solution

The fourth proportional to 328,318.64, 492,477.90 and 79,000.64 is: 118,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,318.64 : 492,477.90 = 79,000.64 : x
  2. Step 2: Convert to fraction form
    328,318.64/492,477.90 = 79,000.64/x
  3. Step 3: Cross multiply
    328,318.64x = 492,477.90 × 79,000.64
  4. Step 4: Simplify right side
    328,318.64x = 38,906,069,285.86
  5. Step 5: Solve for x
    x = 38,906,069,285.86/328,318.64
  6. Step 6: Final answer
    x = 118,500.95

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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.