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Finding the Fourth Proportional to 445,888.36, 669,051.24 and 209,250.28

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Solution

The fourth proportional to 445,888.36, 669,051.24 and 209,250.28 is: 313,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,888.36 : 669,051.24 = 209,250.28 : x
  2. Step 2: Convert to fraction form
    445,888.36/669,051.24 = 209,250.28/x
  3. Step 3: Cross multiply
    445,888.36x = 669,051.24 × 209,250.28
  4. Step 4: Simplify right side
    445,888.36x = 139,999,159,304.35
  5. Step 5: Solve for x
    x = 139,999,159,304.35/445,888.36
  6. Step 6: Final answer
    x = 313,978.05

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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.