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Finding the Fourth Proportional to 408,051.70, 611,479.95 and 365,931.70

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Solution

The fourth proportional to 408,051.70, 611,479.95 and 365,931.70 is: 548,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,051.70 : 611,479.95 = 365,931.70 : x
  2. Step 2: Convert to fraction form
    408,051.70/611,479.95 = 365,931.70/x
  3. Step 3: Cross multiply
    408,051.70x = 611,479.95 × 365,931.70
  4. Step 4: Simplify right side
    408,051.70x = 223,759,897,619.42
  5. Step 5: Solve for x
    x = 223,759,897,619.42/408,051.70
  6. Step 6: Final answer
    x = 548,361.64

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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.