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Finding the Fourth Proportional to 203,480.78, 280,802.07 and 112,836.80

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Solution

The fourth proportional to 203,480.78, 280,802.07 and 112,836.80 is: 155,714.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,480.78 : 280,802.07 = 112,836.80 : x
  2. Step 2: Convert to fraction form
    203,480.78/280,802.07 = 112,836.80/x
  3. Step 3: Cross multiply
    203,480.78x = 280,802.07 × 112,836.80
  4. Step 4: Simplify right side
    203,480.78x = 31,684,807,012.18
  5. Step 5: Solve for x
    x = 31,684,807,012.18/203,480.78
  6. Step 6: Final answer
    x = 155,714.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.