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Finding the Fourth Proportional to 320,989.68, 481,227.48 and 152,424.72

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Solution

The fourth proportional to 320,989.68, 481,227.48 and 152,424.72 is: 228,515.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,989.68 : 481,227.48 = 152,424.72 : x
  2. Step 2: Convert to fraction form
    320,989.68/481,227.48 = 152,424.72/x
  3. Step 3: Cross multiply
    320,989.68x = 481,227.48 × 152,424.72
  4. Step 4: Simplify right side
    320,989.68x = 73,350,963,895.31
  5. Step 5: Solve for x
    x = 73,350,963,895.31/320,989.68
  6. Step 6: Final answer
    x = 228,515.02

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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.