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Finding the Fourth Proportional to 282,956.17, 390,456.21 and 166,651.51

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Solution

The fourth proportional to 282,956.17, 390,456.21 and 166,651.51 is: 229,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,956.17 : 390,456.21 = 166,651.51 : x
  2. Step 2: Convert to fraction form
    282,956.17/390,456.21 = 166,651.51/x
  3. Step 3: Cross multiply
    282,956.17x = 390,456.21 × 166,651.51
  4. Step 4: Simplify right side
    282,956.17x = 65,070,116,985.38
  5. Step 5: Solve for x
    x = 65,070,116,985.38/282,956.17
  6. Step 6: Final answer
    x = 229,965.36

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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.