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Finding the Fourth Proportional to 103,298.28, 154,927.02 and 28,399.11

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Solution

The fourth proportional to 103,298.28, 154,927.02 and 28,399.11 is: 42,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,298.28 : 154,927.02 = 28,399.11 : x
  2. Step 2: Convert to fraction form
    103,298.28/154,927.02 = 28,399.11/x
  3. Step 3: Cross multiply
    103,298.28x = 154,927.02 × 28,399.11
  4. Step 4: Simplify right side
    103,298.28x = 4,399,789,482.95
  5. Step 5: Solve for x
    x = 4,399,789,482.95/103,298.28
  6. Step 6: Final answer
    x = 42,593.06

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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.