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Finding the Fourth Proportional to 628,014.40, 942,168.60 and 207,289.86

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Solution

The fourth proportional to 628,014.40, 942,168.60 and 207,289.86 is: 310,983.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,014.40 : 942,168.60 = 207,289.86 : x
  2. Step 2: Convert to fraction form
    628,014.40/942,168.60 = 207,289.86/x
  3. Step 3: Cross multiply
    628,014.40x = 942,168.60 × 207,289.86
  4. Step 4: Simplify right side
    628,014.40x = 195,301,997,190.40
  5. Step 5: Solve for x
    x = 195,301,997,190.40/628,014.40
  6. Step 6: Final answer
    x = 310,983.31

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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.