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Finding the Fourth Proportional to 442,656.80, 663,908.40 and 162,029.60

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Solution

The fourth proportional to 442,656.80, 663,908.40 and 162,029.60 is: 243,016.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,656.80 : 663,908.40 = 162,029.60 : x
  2. Step 2: Convert to fraction form
    442,656.80/663,908.40 = 162,029.60/x
  3. Step 3: Cross multiply
    442,656.80x = 663,908.40 × 162,029.60
  4. Step 4: Simplify right side
    442,656.80x = 107,572,812,488.64
  5. Step 5: Solve for x
    x = 107,572,812,488.64/442,656.80
  6. Step 6: Final answer
    x = 243,016.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.