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Finding the Fourth Proportional to 243,846.63, 365,694.03 and 86,038.11

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Solution

The fourth proportional to 243,846.63, 365,694.03 and 86,038.11 is: 129,030.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,846.63 : 365,694.03 = 86,038.11 : x
  2. Step 2: Convert to fraction form
    243,846.63/365,694.03 = 86,038.11/x
  3. Step 3: Cross multiply
    243,846.63x = 365,694.03 × 86,038.11
  4. Step 4: Simplify right side
    243,846.63x = 31,463,623,179.48
  5. Step 5: Solve for x
    x = 31,463,623,179.48/243,846.63
  6. Step 6: Final answer
    x = 129,030.38

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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.