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Finding the Fourth Proportional to 291,292.02, 436,940.91 and 91,607.94

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Solution

The fourth proportional to 291,292.02, 436,940.91 and 91,607.94 is: 137,412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,292.02 : 436,940.91 = 91,607.94 : x
  2. Step 2: Convert to fraction form
    291,292.02/436,940.91 = 91,607.94/x
  3. Step 3: Cross multiply
    291,292.02x = 436,940.91 × 91,607.94
  4. Step 4: Simplify right side
    291,292.02x = 40,027,256,666.83
  5. Step 5: Solve for x
    x = 40,027,256,666.83/291,292.02
  6. Step 6: Final answer
    x = 137,412.82

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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.