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Finding the Fourth Proportional to 291,406.38, 436,803.36 and 133,504.98

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Solution

The fourth proportional to 291,406.38, 436,803.36 and 133,504.98 is: 200,117.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,406.38 : 436,803.36 = 133,504.98 : x
  2. Step 2: Convert to fraction form
    291,406.38/436,803.36 = 133,504.98/x
  3. Step 3: Cross multiply
    291,406.38x = 436,803.36 × 133,504.98
  4. Step 4: Simplify right side
    291,406.38x = 58,315,423,840.73
  5. Step 5: Solve for x
    x = 58,315,423,840.73/291,406.38
  6. Step 6: Final answer
    x = 200,117.18

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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.