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Finding the Fourth Proportional to 268,189.92, 370,049.72 and 153,503.64

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Solution

The fourth proportional to 268,189.92, 370,049.72 and 153,503.64 is: 211,805.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,189.92 : 370,049.72 = 153,503.64 : x
  2. Step 2: Convert to fraction form
    268,189.92/370,049.72 = 153,503.64/x
  3. Step 3: Cross multiply
    268,189.92x = 370,049.72 × 153,503.64
  4. Step 4: Simplify right side
    268,189.92x = 56,803,978,233.46
  5. Step 5: Solve for x
    x = 56,803,978,233.46/268,189.92
  6. Step 6: Final answer
    x = 211,805.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.