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Finding the Fourth Proportional to 272,507.50, 408,775.83 and 85,533.58

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Solution

The fourth proportional to 272,507.50, 408,775.83 and 85,533.58 is: 128,304.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,507.50 : 408,775.83 = 85,533.58 : x
  2. Step 2: Convert to fraction form
    272,507.50/408,775.83 = 85,533.58/x
  3. Step 3: Cross multiply
    272,507.50x = 408,775.83 × 85,533.58
  4. Step 4: Simplify right side
    272,507.50x = 34,964,060,157.37
  5. Step 5: Solve for x
    x = 34,964,060,157.37/272,507.50
  6. Step 6: Final answer
    x = 128,304.95

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1.5x scale

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.