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Finding the Fourth Proportional to 328,937.61, 492,897.83 and 256,719.29

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Solution

The fourth proportional to 328,937.61, 492,897.83 and 256,719.29 is: 384,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,937.61 : 492,897.83 = 256,719.29 : x
  2. Step 2: Convert to fraction form
    328,937.61/492,897.83 = 256,719.29/x
  3. Step 3: Cross multiply
    328,937.61x = 492,897.83 × 256,719.29
  4. Step 4: Simplify right side
    328,937.61x = 126,536,379,378.12
  5. Step 5: Solve for x
    x = 126,536,379,378.12/328,937.61
  6. Step 6: Final answer
    x = 384,682.01

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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.