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Finding the Fourth Proportional to 223,460.09, 308,381 and 121,492.40

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Solution

The fourth proportional to 223,460.09, 308,381 and 121,492.40 is: 167,662.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,460.09 : 308,381 = 121,492.40 : x
  2. Step 2: Convert to fraction form
    223,460.09/308,381 = 121,492.40/x
  3. Step 3: Cross multiply
    223,460.09x = 308,381 × 121,492.40
  4. Step 4: Simplify right side
    223,460.09x = 37,465,947,804.40
  5. Step 5: Solve for x
    x = 37,465,947,804.40/223,460.09
  6. Step 6: Final answer
    x = 167,662.82

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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.