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Finding the Fourth Proportional to 489,496.40, 733,661.40 and 205,186.40

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Solution

The fourth proportional to 489,496.40, 733,661.40 and 205,186.40 is: 307,535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,496.40 : 733,661.40 = 205,186.40 : x
  2. Step 2: Convert to fraction form
    489,496.40/733,661.40 = 205,186.40/x
  3. Step 3: Cross multiply
    489,496.40x = 733,661.40 × 205,186.40
  4. Step 4: Simplify right side
    489,496.40x = 150,537,341,484.96
  5. Step 5: Solve for x
    x = 150,537,341,484.96/489,496.40
  6. Step 6: Final answer
    x = 307,535.14

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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.