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Finding the Fourth Proportional to 220,837.65, 304,755.98 and 120,235.65

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Solution

The fourth proportional to 220,837.65, 304,755.98 and 120,235.65 is: 165,925.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,837.65 : 304,755.98 = 120,235.65 : x
  2. Step 2: Convert to fraction form
    220,837.65/304,755.98 = 120,235.65/x
  3. Step 3: Cross multiply
    220,837.65x = 304,755.98 × 120,235.65
  4. Step 4: Simplify right side
    220,837.65x = 36,642,532,745.51
  5. Step 5: Solve for x
    x = 36,642,532,745.51/220,837.65
  6. Step 6: Final answer
    x = 165,925.21

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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.