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Finding the Fourth Proportional to 369,236.70, 553,859.44 and 102,981

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Solution

The fourth proportional to 369,236.70, 553,859.44 and 102,981 is: 154,472.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,236.70 : 553,859.44 = 102,981 : x
  2. Step 2: Convert to fraction form
    369,236.70/553,859.44 = 102,981/x
  3. Step 3: Cross multiply
    369,236.70x = 553,859.44 × 102,981
  4. Step 4: Simplify right side
    369,236.70x = 57,036,998,990.64
  5. Step 5: Solve for x
    x = 57,036,998,990.64/369,236.70
  6. Step 6: Final answer
    x = 154,472.72

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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.