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Finding the Fourth Proportional to 449,717.71, 620,612.06 and 245,768.72

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Solution

The fourth proportional to 449,717.71, 620,612.06 and 245,768.72 is: 339,161.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,717.71 : 620,612.06 = 245,768.72 : x
  2. Step 2: Convert to fraction form
    449,717.71/620,612.06 = 245,768.72/x
  3. Step 3: Cross multiply
    449,717.71x = 620,612.06 × 245,768.72
  4. Step 4: Simplify right side
    449,717.71x = 152,527,030,373.92
  5. Step 5: Solve for x
    x = 152,527,030,373.92/449,717.71
  6. Step 6: Final answer
    x = 339,161.72

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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.