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Finding the Fourth Proportional to 486,090.13, 729,170.22 and 186,570.71

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Solution

The fourth proportional to 486,090.13, 729,170.22 and 186,570.71 is: 279,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,090.13 : 729,170.22 = 186,570.71 : x
  2. Step 2: Convert to fraction form
    486,090.13/729,170.22 = 186,570.71/x
  3. Step 3: Cross multiply
    486,090.13x = 729,170.22 × 186,570.71
  4. Step 4: Simplify right side
    486,090.13x = 136,041,802,010.41
  5. Step 5: Solve for x
    x = 136,041,802,010.41/486,090.13
  6. Step 6: Final answer
    x = 279,869.50

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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.