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Finding the Fourth Proportional to 272,089.35, 408,138.14 and 103,619.00

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Solution

The fourth proportional to 272,089.35, 408,138.14 and 103,619.00 is: 155,430.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,089.35 : 408,138.14 = 103,619.00 : x
  2. Step 2: Convert to fraction form
    272,089.35/408,138.14 = 103,619.00/x
  3. Step 3: Cross multiply
    272,089.35x = 408,138.14 × 103,619.00
  4. Step 4: Simplify right side
    272,089.35x = 42,290,863,369.87
  5. Step 5: Solve for x
    x = 42,290,863,369.87/272,089.35
  6. Step 6: Final answer
    x = 155,430.06

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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.