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Finding the Fourth Proportional to 281,483.04, 388,449.90 and 154,164

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Solution

The fourth proportional to 281,483.04, 388,449.90 and 154,164 is: 212,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,483.04 : 388,449.90 = 154,164 : x
  2. Step 2: Convert to fraction form
    281,483.04/388,449.90 = 154,164/x
  3. Step 3: Cross multiply
    281,483.04x = 388,449.90 × 154,164
  4. Step 4: Simplify right side
    281,483.04x = 59,884,990,383.60
  5. Step 5: Solve for x
    x = 59,884,990,383.60/281,483.04
  6. Step 6: Final answer
    x = 212,748.13

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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.