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Finding the Fourth Proportional to 486,258.51, 728,888.94 and 186,658.41

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Solution

The fourth proportional to 486,258.51, 728,888.94 and 186,658.41 is: 279,796.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,258.51 : 728,888.94 = 186,658.41 : x
  2. Step 2: Convert to fraction form
    486,258.51/728,888.94 = 186,658.41/x
  3. Step 3: Cross multiply
    486,258.51x = 728,888.94 × 186,658.41
  4. Step 4: Simplify right side
    486,258.51x = 136,053,250,606.99
  5. Step 5: Solve for x
    x = 136,053,250,606.99/486,258.51
  6. Step 6: Final answer
    x = 279,796.13

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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.