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Finding the Fourth Proportional to 398,946.51, 550,638.54 and 263,004.48

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Solution

The fourth proportional to 398,946.51, 550,638.54 and 263,004.48 is: 363,007.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,946.51 : 550,638.54 = 263,004.48 : x
  2. Step 2: Convert to fraction form
    398,946.51/550,638.54 = 263,004.48/x
  3. Step 3: Cross multiply
    398,946.51x = 550,638.54 × 263,004.48
  4. Step 4: Simplify right side
    398,946.51x = 144,820,402,880.66
  5. Step 5: Solve for x
    x = 144,820,402,880.66/398,946.51
  6. Step 6: Final answer
    x = 363,007.07

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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.