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Finding the Fourth Proportional to 282,894.52, 390,383.58 and 155,562.52

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Solution

The fourth proportional to 282,894.52, 390,383.58 and 155,562.52 is: 214,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,894.52 : 390,383.58 = 155,562.52 : x
  2. Step 2: Convert to fraction form
    282,894.52/390,383.58 = 155,562.52/x
  3. Step 3: Cross multiply
    282,894.52x = 390,383.58 × 155,562.52
  4. Step 4: Simplify right side
    282,894.52x = 60,729,053,471.42
  5. Step 5: Solve for x
    x = 60,729,053,471.42/282,894.52
  6. Step 6: Final answer
    x = 214,670.31

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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.