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Finding the Fourth Proportional to 328,392.10, 492,551.70 and 269,124.40

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Solution

The fourth proportional to 328,392.10, 492,551.70 and 269,124.40 is: 403,656.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,392.10 : 492,551.70 = 269,124.40 : x
  2. Step 2: Convert to fraction form
    328,392.10/492,551.70 = 269,124.40/x
  3. Step 3: Cross multiply
    328,392.10x = 492,551.70 × 269,124.40
  4. Step 4: Simplify right side
    328,392.10x = 132,557,680,731.48
  5. Step 5: Solve for x
    x = 132,557,680,731.48/328,392.10
  6. Step 6: Final answer
    x = 403,656.73

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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.