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Finding the Fourth Proportional to 404,314.64, 606,544.58 and 138,012.88

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Solution

The fourth proportional to 404,314.64, 606,544.58 and 138,012.88 is: 207,044.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,314.64 : 606,544.58 = 138,012.88 : x
  2. Step 2: Convert to fraction form
    404,314.64/606,544.58 = 138,012.88/x
  3. Step 3: Cross multiply
    404,314.64x = 606,544.58 × 138,012.88
  4. Step 4: Simplify right side
    404,314.64x = 83,710,964,334.19
  5. Step 5: Solve for x
    x = 83,710,964,334.19/404,314.64
  6. Step 6: Final answer
    x = 207,044.11

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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.