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Finding the Fourth Proportional to 290,329.31, 400,654.76 and 163,005.21

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Solution

The fourth proportional to 290,329.31, 400,654.76 and 163,005.21 is: 224,947.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,329.31 : 400,654.76 = 163,005.21 : x
  2. Step 2: Convert to fraction form
    290,329.31/400,654.76 = 163,005.21/x
  3. Step 3: Cross multiply
    290,329.31x = 400,654.76 × 163,005.21
  4. Step 4: Simplify right side
    290,329.31x = 65,308,812,476.27
  5. Step 5: Solve for x
    x = 65,308,812,476.27/290,329.31
  6. Step 6: Final answer
    x = 224,947.36

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1.5x scale

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.