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Finding the Fourth Proportional to 449,153.96, 619,843.76 and 255,551

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Solution

The fourth proportional to 449,153.96, 619,843.76 and 255,551 is: 352,666.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,153.96 : 619,843.76 = 255,551 : x
  2. Step 2: Convert to fraction form
    449,153.96/619,843.76 = 255,551/x
  3. Step 3: Cross multiply
    449,153.96x = 619,843.76 × 255,551
  4. Step 4: Simplify right side
    449,153.96x = 158,401,692,711.76
  5. Step 5: Solve for x
    x = 158,401,692,711.76/449,153.96
  6. Step 6: Final answer
    x = 352,666.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.