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Finding the Fourth Proportional to 481,533.84, 722,130.30 and 139,906.20

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Solution

The fourth proportional to 481,533.84, 722,130.30 and 139,906.20 is: 209,809.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,533.84 : 722,130.30 = 139,906.20 : x
  2. Step 2: Convert to fraction form
    481,533.84/722,130.30 = 139,906.20/x
  3. Step 3: Cross multiply
    481,533.84x = 722,130.30 × 139,906.20
  4. Step 4: Simplify right side
    481,533.84x = 101,030,506,177.86
  5. Step 5: Solve for x
    x = 101,030,506,177.86/481,533.84
  6. Step 6: Final answer
    x = 209,809.77

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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.