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Finding the Fourth Proportional to 493,656.40, 739,966.20 and 194,021.20

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Solution

The fourth proportional to 493,656.40, 739,966.20 and 194,021.20 is: 290,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,656.40 : 739,966.20 = 194,021.20 : x
  2. Step 2: Convert to fraction form
    493,656.40/739,966.20 = 194,021.20/x
  3. Step 3: Cross multiply
    493,656.40x = 739,966.20 × 194,021.20
  4. Step 4: Simplify right side
    493,656.40x = 143,569,130,083.44
  5. Step 5: Solve for x
    x = 143,569,130,083.44/493,656.40
  6. Step 6: Final answer
    x = 290,828.05

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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.