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Finding the Fourth Proportional to 220,053.66, 303,860.21 and 139,623.90

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Solution

The fourth proportional to 220,053.66, 303,860.21 and 139,623.90 is: 192,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,053.66 : 303,860.21 = 139,623.90 : x
  2. Step 2: Convert to fraction form
    220,053.66/303,860.21 = 139,623.90/x
  3. Step 3: Cross multiply
    220,053.66x = 303,860.21 × 139,623.90
  4. Step 4: Simplify right side
    220,053.66x = 42,426,146,876.90
  5. Step 5: Solve for x
    x = 42,426,146,876.90/220,053.66
  6. Step 6: Final answer
    x = 192,799.10

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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.