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Finding the Fourth Proportional to 328,988.79, 492,360.35 and 275,740.92

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Solution

The fourth proportional to 328,988.79, 492,360.35 and 275,740.92 is: 412,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,988.79 : 492,360.35 = 275,740.92 : x
  2. Step 2: Convert to fraction form
    328,988.79/492,360.35 = 275,740.92/x
  3. Step 3: Cross multiply
    328,988.79x = 492,360.35 × 275,740.92
  4. Step 4: Simplify right side
    328,988.79x = 135,763,895,880.52
  5. Step 5: Solve for x
    x = 135,763,895,880.52/328,988.79
  6. Step 6: Final answer
    x = 412,670.28

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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.