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Finding the Fourth Proportional to 438,812.96, 658,089.02 and 186,089.72

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Solution

The fourth proportional to 438,812.96, 658,089.02 and 186,089.72 is: 279,079.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,812.96 : 658,089.02 = 186,089.72 : x
  2. Step 2: Convert to fraction form
    438,812.96/658,089.02 = 186,089.72/x
  3. Step 3: Cross multiply
    438,812.96x = 658,089.02 × 186,089.72
  4. Step 4: Simplify right side
    438,812.96x = 122,463,601,466.87
  5. Step 5: Solve for x
    x = 122,463,601,466.87/438,812.96
  6. Step 6: Final answer
    x = 279,079.27

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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.