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Finding the Fourth Proportional to 442,912.60, 664,368.90 and 162,393.40

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Solution

The fourth proportional to 442,912.60, 664,368.90 and 162,393.40 is: 243,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,912.60 : 664,368.90 = 162,393.40 : x
  2. Step 2: Convert to fraction form
    442,912.60/664,368.90 = 162,393.40/x
  3. Step 3: Cross multiply
    442,912.60x = 664,368.90 × 162,393.40
  4. Step 4: Simplify right side
    442,912.60x = 107,889,124,525.26
  5. Step 5: Solve for x
    x = 107,889,124,525.26/442,912.60
  6. Step 6: Final answer
    x = 243,590.10

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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.