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Finding the Fourth Proportional to 279,997.08, 386,397.72 and 152,674.80

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Solution

The fourth proportional to 279,997.08, 386,397.72 and 152,674.80 is: 210,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,997.08 : 386,397.72 = 152,674.80 : x
  2. Step 2: Convert to fraction form
    279,997.08/386,397.72 = 152,674.80/x
  3. Step 3: Cross multiply
    279,997.08x = 386,397.72 × 152,674.80
  4. Step 4: Simplify right side
    279,997.08x = 58,993,194,621.46
  5. Step 5: Solve for x
    x = 58,993,194,621.46/279,997.08
  6. Step 6: Final answer
    x = 210,692.18

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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.