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Finding the Fourth Proportional to 203,133.76, 304,586.68 and 139,164.16

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Solution

The fourth proportional to 203,133.76, 304,586.68 and 139,164.16 is: 208,668.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,133.76 : 304,586.68 = 139,164.16 : x
  2. Step 2: Convert to fraction form
    203,133.76/304,586.68 = 139,164.16/x
  3. Step 3: Cross multiply
    203,133.76x = 304,586.68 × 139,164.16
  4. Step 4: Simplify right side
    203,133.76x = 42,387,550,477.02
  5. Step 5: Solve for x
    x = 42,387,550,477.02/203,133.76
  6. Step 6: Final answer
    x = 208,668.17

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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.