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Finding the Fourth Proportional to 659,531.60, 989,200.20 and 186,264.80

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Solution

The fourth proportional to 659,531.60, 989,200.20 and 186,264.80 is: 279,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,531.60 : 989,200.20 = 186,264.80 : x
  2. Step 2: Convert to fraction form
    659,531.60/989,200.20 = 186,264.80/x
  3. Step 3: Cross multiply
    659,531.60x = 989,200.20 × 186,264.80
  4. Step 4: Simplify right side
    659,531.60x = 184,253,177,412.96
  5. Step 5: Solve for x
    x = 184,253,177,412.96/659,531.60
  6. Step 6: Final answer
    x = 279,369.75

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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.