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Finding the Fourth Proportional to 395,989.58, 593,984.05 and 143,210.86

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Solution

The fourth proportional to 395,989.58, 593,984.05 and 143,210.86 is: 214,816.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,989.58 : 593,984.05 = 143,210.86 : x
  2. Step 2: Convert to fraction form
    395,989.58/593,984.05 = 143,210.86/x
  3. Step 3: Cross multiply
    395,989.58x = 593,984.05 × 143,210.86
  4. Step 4: Simplify right side
    395,989.58x = 85,064,966,626.78
  5. Step 5: Solve for x
    x = 85,064,966,626.78/395,989.58
  6. Step 6: Final answer
    x = 214,816.17

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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.