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Finding the Fourth Proportional to 272,444.84, 408,702.98 and 90,015.05

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Solution

The fourth proportional to 272,444.84, 408,702.98 and 90,015.05 is: 135,034.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,444.84 : 408,702.98 = 90,015.05 : x
  2. Step 2: Convert to fraction form
    272,444.84/408,702.98 = 90,015.05/x
  3. Step 3: Cross multiply
    272,444.84x = 408,702.98 × 90,015.05
  4. Step 4: Simplify right side
    272,444.84x = 36,789,416,686.26
  5. Step 5: Solve for x
    x = 36,789,416,686.26/272,444.84
  6. Step 6: Final answer
    x = 135,034.37

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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.