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Finding the Fourth Proportional to 369,557.70, 554,418.87 and 144,939.45

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Solution

The fourth proportional to 369,557.70, 554,418.87 and 144,939.45 is: 217,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,557.70 : 554,418.87 = 144,939.45 : x
  2. Step 2: Convert to fraction form
    369,557.70/554,418.87 = 144,939.45/x
  3. Step 3: Cross multiply
    369,557.70x = 554,418.87 × 144,939.45
  4. Step 4: Simplify right side
    369,557.70x = 80,357,166,087.42
  5. Step 5: Solve for x
    x = 80,357,166,087.42/369,557.70
  6. Step 6: Final answer
    x = 217,441.46

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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.