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Finding the Fourth Proportional to 205,880.60, 308,820.90 and 202,381.40

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Solution

The fourth proportional to 205,880.60, 308,820.90 and 202,381.40 is: 303,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,880.60 : 308,820.90 = 202,381.40 : x
  2. Step 2: Convert to fraction form
    205,880.60/308,820.90 = 202,381.40/x
  3. Step 3: Cross multiply
    205,880.60x = 308,820.90 × 202,381.40
  4. Step 4: Simplify right side
    205,880.60x = 62,499,606,091.26
  5. Step 5: Solve for x
    x = 62,499,606,091.26/205,880.60
  6. Step 6: Final answer
    x = 303,572.10

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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.