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Finding the Fourth Proportional to 220,510.66, 304,317.99 and 129,927

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Solution

The fourth proportional to 220,510.66, 304,317.99 and 129,927 is: 179,307.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,510.66 : 304,317.99 = 129,927 : x
  2. Step 2: Convert to fraction form
    220,510.66/304,317.99 = 129,927/x
  3. Step 3: Cross multiply
    220,510.66x = 304,317.99 × 129,927
  4. Step 4: Simplify right side
    220,510.66x = 39,539,123,486.73
  5. Step 5: Solve for x
    x = 39,539,123,486.73/220,510.66
  6. Step 6: Final answer
    x = 179,307.08

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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.