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Finding the Fourth Proportional to 387,972.76, 535,099.09 and 252,050.50

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Solution

The fourth proportional to 387,972.76, 535,099.09 and 252,050.50 is: 347,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,972.76 : 535,099.09 = 252,050.50 : x
  2. Step 2: Convert to fraction form
    387,972.76/535,099.09 = 252,050.50/x
  3. Step 3: Cross multiply
    387,972.76x = 535,099.09 × 252,050.50
  4. Step 4: Simplify right side
    387,972.76x = 134,871,991,216.17
  5. Step 5: Solve for x
    x = 134,871,991,216.17/387,972.76
  6. Step 6: Final answer
    x = 347,632.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.