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Finding the Fourth Proportional to 353,133.86, 487,322.30 and 191,988.90

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Solution

The fourth proportional to 353,133.86, 487,322.30 and 191,988.90 is: 264,943.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,133.86 : 487,322.30 = 191,988.90 : x
  2. Step 2: Convert to fraction form
    353,133.86/487,322.30 = 191,988.90/x
  3. Step 3: Cross multiply
    353,133.86x = 487,322.30 × 191,988.90
  4. Step 4: Simplify right side
    353,133.86x = 93,560,472,802.44
  5. Step 5: Solve for x
    x = 93,560,472,802.44/353,133.86
  6. Step 6: Final answer
    x = 264,943.37

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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.