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Finding the Fourth Proportional to 223,460.59, 308,381.69 and 121,492.90

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Solution

The fourth proportional to 223,460.59, 308,381.69 and 121,492.90 is: 167,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,460.59 : 308,381.69 = 121,492.90 : x
  2. Step 2: Convert to fraction form
    223,460.59/308,381.69 = 121,492.90/x
  3. Step 3: Cross multiply
    223,460.59x = 308,381.69 × 121,492.90
  4. Step 4: Simplify right side
    223,460.59x = 37,466,185,825.00
  5. Step 5: Solve for x
    x = 37,466,185,825.00/223,460.59
  6. Step 6: Final answer
    x = 167,663.51

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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.