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Finding the Fourth Proportional to 449,153.72, 619,794.89 and 255,509.90

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Solution

The fourth proportional to 449,153.72, 619,794.89 and 255,509.90 is: 352,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,153.72 : 619,794.89 = 255,509.90 : x
  2. Step 2: Convert to fraction form
    449,153.72/619,794.89 = 255,509.90/x
  3. Step 3: Cross multiply
    449,153.72x = 619,794.89 × 255,509.90
  4. Step 4: Simplify right side
    449,153.72x = 158,363,731,594.51
  5. Step 5: Solve for x
    x = 158,363,731,594.51/449,153.72
  6. Step 6: Final answer
    x = 352,582.48

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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.