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Finding the Fourth Proportional to 283,080.51, 390,654.96 and 154,020.52

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Solution

The fourth proportional to 283,080.51, 390,654.96 and 154,020.52 is: 212,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,080.51 : 390,654.96 = 154,020.52 : x
  2. Step 2: Convert to fraction form
    283,080.51/390,654.96 = 154,020.52/x
  3. Step 3: Cross multiply
    283,080.51x = 390,654.96 × 154,020.52
  4. Step 4: Simplify right side
    283,080.51x = 60,168,880,079.78
  5. Step 5: Solve for x
    x = 60,168,880,079.78/283,080.51
  6. Step 6: Final answer
    x = 212,550.42

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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.