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Finding the Fourth Proportional to 190,375.60, 285,217.80 and 155,124.40

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Solution

The fourth proportional to 190,375.60, 285,217.80 and 155,124.40 is: 232,404.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,375.60 : 285,217.80 = 155,124.40 : x
  2. Step 2: Convert to fraction form
    190,375.60/285,217.80 = 155,124.40/x
  3. Step 3: Cross multiply
    190,375.60x = 285,217.80 × 155,124.40
  4. Step 4: Simplify right side
    190,375.60x = 44,244,240,094.32
  5. Step 5: Solve for x
    x = 44,244,240,094.32/190,375.60
  6. Step 6: Final answer
    x = 232,404.99

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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.