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Finding the Fourth Proportional to 205,980.10, 308,970.15 and 202,480.90

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Solution

The fourth proportional to 205,980.10, 308,970.15 and 202,480.90 is: 303,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,980.10 : 308,970.15 = 202,480.90 : x
  2. Step 2: Convert to fraction form
    205,980.10/308,970.15 = 202,480.90/x
  3. Step 3: Cross multiply
    205,980.10x = 308,970.15 × 202,480.90
  4. Step 4: Simplify right side
    205,980.10x = 62,560,554,045.14
  5. Step 5: Solve for x
    x = 62,560,554,045.14/205,980.10
  6. Step 6: Final answer
    x = 303,721.35

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1.5x scale

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.