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Finding the Fourth Proportional to 486,247.80, 729,026.10 and 186,612.60

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Solution

The fourth proportional to 486,247.80, 729,026.10 and 186,612.60 is: 279,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,247.80 : 729,026.10 = 186,612.60 : x
  2. Step 2: Convert to fraction form
    486,247.80/729,026.10 = 186,612.60/x
  3. Step 3: Cross multiply
    486,247.80x = 729,026.10 × 186,612.60
  4. Step 4: Simplify right side
    486,247.80x = 136,045,455,988.86
  5. Step 5: Solve for x
    x = 136,045,455,988.86/486,247.80
  6. Step 6: Final answer
    x = 279,786.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.