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Finding the Fourth Proportional to 220,511.16, 304,318.68 and 129,927.50

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Solution

The fourth proportional to 220,511.16, 304,318.68 and 129,927.50 is: 179,307.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,511.16 : 304,318.68 = 129,927.50 : x
  2. Step 2: Convert to fraction form
    220,511.16/304,318.68 = 129,927.50/x
  3. Step 3: Cross multiply
    220,511.16x = 304,318.68 × 129,927.50
  4. Step 4: Simplify right side
    220,511.16x = 39,539,365,295.70
  5. Step 5: Solve for x
    x = 39,539,365,295.70/220,511.16
  6. Step 6: Final answer
    x = 179,307.77

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1.5x scale

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.