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Finding the Fourth Proportional to 659,315.60, 988,876.20 and 186,048.80

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Solution

The fourth proportional to 659,315.60, 988,876.20 and 186,048.80 is: 279,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315.60 : 988,876.20 = 186,048.80 : x
  2. Step 2: Convert to fraction form
    659,315.60/988,876.20 = 186,048.80/x
  3. Step 3: Cross multiply
    659,315.60x = 988,876.20 × 186,048.80
  4. Step 4: Simplify right side
    659,315.60x = 183,979,230,358.56
  5. Step 5: Solve for x
    x = 183,979,230,358.56/659,315.60
  6. Step 6: Final answer
    x = 279,045.77

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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.