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Finding the Fourth Proportional to 220,790.42, 304,689.92 and 123,980.82

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Solution

The fourth proportional to 220,790.42, 304,689.92 and 123,980.82 is: 171,093.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,790.42 : 304,689.92 = 123,980.82 : x
  2. Step 2: Convert to fraction form
    220,790.42/304,689.92 = 123,980.82/x
  3. Step 3: Cross multiply
    220,790.42x = 304,689.92 × 123,980.82
  4. Step 4: Simplify right side
    220,790.42x = 37,775,704,364.84
  5. Step 5: Solve for x
    x = 37,775,704,364.84/220,790.42
  6. Step 6: Final answer
    x = 171,093.04

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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.