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Finding the Fourth Proportional to 190,347.50, 285,525.84 and 63,989.40

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Solution

The fourth proportional to 190,347.50, 285,525.84 and 63,989.40 is: 95,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,347.50 : 285,525.84 = 63,989.40 : x
  2. Step 2: Convert to fraction form
    190,347.50/285,525.84 = 63,989.40/x
  3. Step 3: Cross multiply
    190,347.50x = 285,525.84 × 63,989.40
  4. Step 4: Simplify right side
    190,347.50x = 18,270,627,186.10
  5. Step 5: Solve for x
    x = 18,270,627,186.10/190,347.50
  6. Step 6: Final answer
    x = 95,985.64

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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.