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Finding the Fourth Proportional to 279,492, 385,705.80 and 152,174.52

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Solution

The fourth proportional to 279,492, 385,705.80 and 152,174.52 is: 210,004.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,492 : 385,705.80 = 152,174.52 : x
  2. Step 2: Convert to fraction form
    279,492/385,705.80 = 152,174.52/x
  3. Step 3: Cross multiply
    279,492x = 385,705.80 × 152,174.52
  4. Step 4: Simplify right side
    279,492x = 58,694,594,976.22
  5. Step 5: Solve for x
    x = 58,694,594,976.22/279,492
  6. Step 6: Final answer
    x = 210,004.56

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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.