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Finding the Fourth Proportional to 279,504.72, 385,703.64 and 152,179.92

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Solution

The fourth proportional to 279,504.72, 385,703.64 and 152,179.92 is: 210,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,504.72 : 385,703.64 = 152,179.92 : x
  2. Step 2: Convert to fraction form
    279,504.72/385,703.64 = 152,179.92/x
  3. Step 3: Cross multiply
    279,504.72x = 385,703.64 × 152,179.92
  4. Step 4: Simplify right side
    279,504.72x = 58,696,349,078.91
  5. Step 5: Solve for x
    x = 58,696,349,078.91/279,504.72
  6. Step 6: Final answer
    x = 210,001.28

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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.