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Finding the Fourth Proportional to 628,670.37, 942,996.33 and 155,355.74

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Solution

The fourth proportional to 628,670.37, 942,996.33 and 155,355.74 is: 233,031.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,670.37 : 942,996.33 = 155,355.74 : x
  2. Step 2: Convert to fraction form
    628,670.37/942,996.33 = 155,355.74/x
  3. Step 3: Cross multiply
    628,670.37x = 942,996.33 × 155,355.74
  4. Step 4: Simplify right side
    628,670.37x = 146,499,887,949.45
  5. Step 5: Solve for x
    x = 146,499,887,949.45/628,670.37
  6. Step 6: Final answer
    x = 233,031.32

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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.