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Finding the Fourth Proportional to 328,702.54, 493,127.70 and 104,076.40

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Solution

The fourth proportional to 328,702.54, 493,127.70 and 104,076.40 is: 156,138.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,702.54 : 493,127.70 = 104,076.40 : x
  2. Step 2: Convert to fraction form
    328,702.54/493,127.70 = 104,076.40/x
  3. Step 3: Cross multiply
    328,702.54x = 493,127.70 × 104,076.40
  4. Step 4: Simplify right side
    328,702.54x = 51,322,955,756.28
  5. Step 5: Solve for x
    x = 51,322,955,756.28/328,702.54
  6. Step 6: Final answer
    x = 156,138.00

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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.