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Finding the Fourth Proportional to 328,064, 492,046.08 and 91,381.76

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Solution

The fourth proportional to 328,064, 492,046.08 and 91,381.76 is: 137,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,064 : 492,046.08 = 91,381.76 : x
  2. Step 2: Convert to fraction form
    328,064/492,046.08 = 91,381.76/x
  3. Step 3: Cross multiply
    328,064x = 492,046.08 × 91,381.76
  4. Step 4: Simplify right side
    328,064x = 44,964,036,791.50
  5. Step 5: Solve for x
    x = 44,964,036,791.50/328,064
  6. Step 6: Final answer
    x = 137,058.73

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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.