Home / 218,810.66-328,028.75-83,971.47

Finding the Fourth Proportional to 218,810.66, 328,028.75 and 83,971.47

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Solution

The fourth proportional to 218,810.66, 328,028.75 and 83,971.47 is: 125,885.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,810.66 : 328,028.75 = 83,971.47 : x
  2. Step 2: Convert to fraction form
    218,810.66/328,028.75 = 83,971.47/x
  3. Step 3: Cross multiply
    218,810.66x = 328,028.75 × 83,971.47
  4. Step 4: Simplify right side
    218,810.66x = 27,545,055,919.91
  5. Step 5: Solve for x
    x = 27,545,055,919.91/218,810.66
  6. Step 6: Final answer
    x = 125,885.35

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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.