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Finding the Fourth Proportional to 279,469.70, 385,675.08 and 152,152.28

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Solution

The fourth proportional to 279,469.70, 385,675.08 and 152,152.28 is: 209,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,469.70 : 385,675.08 = 152,152.28 : x
  2. Step 2: Convert to fraction form
    279,469.70/385,675.08 = 152,152.28/x
  3. Step 3: Cross multiply
    279,469.70x = 385,675.08 × 152,152.28
  4. Step 4: Simplify right side
    279,469.70x = 58,681,342,761.18
  5. Step 5: Solve for x
    x = 58,681,342,761.18/279,469.70
  6. Step 6: Final answer
    x = 209,973.90

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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.