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Finding the Fourth Proportional to 103,298.53, 154,927.40 and 28,399.36

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Solution

The fourth proportional to 103,298.53, 154,927.40 and 28,399.36 is: 42,593.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,298.53 : 154,927.40 = 28,399.36 : x
  2. Step 2: Convert to fraction form
    103,298.53/154,927.40 = 28,399.36/x
  3. Step 3: Cross multiply
    103,298.53x = 154,927.40 × 28,399.36
  4. Step 4: Simplify right side
    103,298.53x = 4,399,838,864.47
  5. Step 5: Solve for x
    x = 4,399,838,864.47/103,298.53
  6. Step 6: Final answer
    x = 42,593.43

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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.