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Finding the Fourth Proportional to 218,573.68, 301,623.52 and 121,775.24

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Solution

The fourth proportional to 218,573.68, 301,623.52 and 121,775.24 is: 168,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,573.68 : 301,623.52 = 121,775.24 : x
  2. Step 2: Convert to fraction form
    218,573.68/301,623.52 = 121,775.24/x
  3. Step 3: Cross multiply
    218,573.68x = 301,623.52 × 121,775.24
  4. Step 4: Simplify right side
    218,573.68x = 36,730,276,537.64
  5. Step 5: Solve for x
    x = 36,730,276,537.64/218,573.68
  6. Step 6: Final answer
    x = 168,045.29

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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.