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Finding the Fourth Proportional to 276,653.80, 415,029.30 and 99,263.80

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Solution

The fourth proportional to 276,653.80, 415,029.30 and 99,263.80 is: 148,913.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,653.80 : 415,029.30 = 99,263.80 : x
  2. Step 2: Convert to fraction form
    276,653.80/415,029.30 = 99,263.80/x
  3. Step 3: Cross multiply
    276,653.80x = 415,029.30 × 99,263.80
  4. Step 4: Simplify right side
    276,653.80x = 41,197,385,429.34
  5. Step 5: Solve for x
    x = 41,197,385,429.34/276,653.80
  6. Step 6: Final answer
    x = 148,913.14

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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.