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Finding the Fourth Proportional to 659,397.60, 988,999.20 and 186,130.80

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Solution

The fourth proportional to 659,397.60, 988,999.20 and 186,130.80 is: 279,168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,397.60 : 988,999.20 = 186,130.80 : x
  2. Step 2: Convert to fraction form
    659,397.60/988,999.20 = 186,130.80/x
  3. Step 3: Cross multiply
    659,397.60x = 988,999.20 × 186,130.80
  4. Step 4: Simplify right side
    659,397.60x = 184,083,212,295.36
  5. Step 5: Solve for x
    x = 184,083,212,295.36/659,397.60
  6. Step 6: Final answer
    x = 279,168.76

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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.