Home / 190,388.60-285,237.30-155,137.40

Finding the Fourth Proportional to 190,388.60, 285,237.30 and 155,137.40

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Solution

The fourth proportional to 190,388.60, 285,237.30 and 155,137.40 is: 232,424.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,388.60 : 285,237.30 = 155,137.40 : x
  2. Step 2: Convert to fraction form
    190,388.60/285,237.30 = 155,137.40/x
  3. Step 3: Cross multiply
    190,388.60x = 285,237.30 × 155,137.40
  4. Step 4: Simplify right side
    190,388.60x = 44,250,973,105.02
  5. Step 5: Solve for x
    x = 44,250,973,105.02/190,388.60
  6. Step 6: Final answer
    x = 232,424.49

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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.