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Finding the Fourth Proportional to 326,802.40, 490,106.40 and 127,007.80

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Solution

The fourth proportional to 326,802.40, 490,106.40 and 127,007.80 is: 190,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,802.40 : 490,106.40 = 127,007.80 : x
  2. Step 2: Convert to fraction form
    326,802.40/490,106.40 = 127,007.80/x
  3. Step 3: Cross multiply
    326,802.40x = 490,106.40 × 127,007.80
  4. Step 4: Simplify right side
    326,802.40x = 62,247,335,629.92
  5. Step 5: Solve for x
    x = 62,247,335,629.92/326,802.40
  6. Step 6: Final answer
    x = 190,473.92

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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.