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Finding the Fourth Proportional to 659,311.60, 988,870.20 and 186,044.80

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Solution

The fourth proportional to 659,311.60, 988,870.20 and 186,044.80 is: 279,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,311.60 : 988,870.20 = 186,044.80 : x
  2. Step 2: Convert to fraction form
    659,311.60/988,870.20 = 186,044.80/x
  3. Step 3: Cross multiply
    659,311.60x = 988,870.20 × 186,044.80
  4. Step 4: Simplify right side
    659,311.60x = 183,974,158,584.96
  5. Step 5: Solve for x
    x = 183,974,158,584.96/659,311.60
  6. Step 6: Final answer
    x = 279,039.77

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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.